diff --git a/mail-client/thunderbird/Manifest b/mail-client/thunderbird/Manifest
index 9dfed85571365..633be19e3d09a 100644
--- a/mail-client/thunderbird/Manifest
+++ b/mail-client/thunderbird/Manifest
@@ -262,4 +262,69 @@ DIST thunderbird-148.0-uz.xpi 351139 BLAKE2B 6b80cfa8447fb410e74fc30d8216835fbdc
 DIST thunderbird-148.0-vi.xpi 524774 BLAKE2B bc4a16e90864636d0af67997aa823d026d7d86d6ef2ad8d86cdf9e77894e881bc14c4f569dfbda428242373a795c58f84704180036640056234746cffdd13b8f SHA512 26721b48abab1464c6204459040cf6e2d8655ce391537a7c4f86513267ba4cd78ace9c27b1a5288273b6438f2d46a7264f27c18618044f7091e9d5424fa8f5ee
 DIST thunderbird-148.0-zh-CN.xpi 513663 BLAKE2B f80a1f9ee59b505f892289451a8788b12eb9ea24a557464dd805764f4c08e0d78f8ea36f4df7a3d0cb9d7ef6d689c09aa168f2cfd0836df5c0f1e057d8457b97 SHA512 df735bc8f9fb1730bfab45728ca20f0e98c355294ae162e4c6de6f7a4122d93456466264f45ecafa2f61e9e30a5cc3a11a11fd1ad0a647922ad50c06cf3754fe
 DIST thunderbird-148.0-zh-TW.xpi 517420 BLAKE2B 3b7fa35e76f3db18a618b674ccfb4c54ce4d344b7fa3ec57b9f43a3bc7d6d158ef91cf143b7e274589ecca13c32971cc5298603986a45ef84d86f30509c99226 SHA512 9f807c4c32468b4c624347829e8fdfd224165a260c054e4d6165416f09619392ce9eaf9ae6858ef70296db64f016645b1329c8d724f7f975c1a20f26e710cf87
+DIST thunderbird-148.0.1-af.xpi 310337 BLAKE2B 5baa4d6072db4539ff4bbe7d86154ef60382b2473c0d4bce9493659bc2a7fa75c163131c1169722fa61992c4fc2c2dd358ce6ded149737c25a5853329c5ab575 SHA512 a871b105ac99040f3d66cf67def2ad978e05c7c579345904ad57312099741bacd8baebd249e249b0ca175ed682c683395d518f3a9557dabfb9a48ac5643dfdb5
+DIST thunderbird-148.0.1-ar.xpi 432417 BLAKE2B 2b4e70461973c28665016386ac74cc175134f7e35cd2ced4e5a8813140956d9e14cbee2bf7a85a68656b1c3b191d642db8fe8004226d644d61192f623ce8bc62 SHA512 df2dec9f4a93ace4e0f0168f8194fc89f8e72e2b620c484cddf9eed1a7607e48888aba4d5ebdef0642c2568c74a35175fc643241accdfb42f31110f26d2dc397
+DIST thunderbird-148.0.1-ast.xpi 334504 BLAKE2B 5f2eb6a3cc347a0eefa3ad6ba5364be404596d76828bda140dc3824ac990f84c0604d9b9eedfbe77c7a6f85f414e216844df6cd47cf85307977292a341a4aabe SHA512 71f4eb3469511e80db4ae59581d33e465abd38d09a9adce40936a10b62649c659576371423450f75e2e2f11236581f47a37093fbb15dbfa7bc6fb0de49e930c7
+DIST thunderbird-148.0.1-be.xpi 522152 BLAKE2B 11f7618031efff2e659e1b4c277b43a0c7a899def42d0cd6831e3c1e8b9dd8c9650b42e4b5c6c0f79ba715b1aa6530741f4145de9f51792260ddcca51eaa58af SHA512 1bbaabf0f032a75f777d6c3434ba0274b080de714d2543d6406e540152c3c9107459097feaa796809637cba6db9362242527d487d79b0180679848af4bb4d5ba
+DIST thunderbird-148.0.1-bg.xpi 541257 BLAKE2B ac63322157ef7d4945ca5e2e65ae1aa90c07cac4464efe24c2ed38279821805b8b088f867f0b87671288b06cba8ae35a41ea61b8dee50387b089288a6382f8e2 SHA512 3e9edfbcbac2b5bdef3e1df90de1feeeaaa9aef192011c9d252b6093de4c51f1eb174815f147be70cbd23e05df2b4fb047ea567858278a9ace8aa357f6be1c95
+DIST thunderbird-148.0.1-br.xpi 399304 BLAKE2B 315f81921a1c712c83f74aa4fdfa3617215b1d32c5e92594ae30cf8e74a7dd66c44aa7b19dd9aa5798ed85b4a44a3e183a9593480767e7ae437468a8cbd040d3 SHA512 26c90a391ef415be86d97a5b8a24675e8a8c470146b617f1daf1d397b8ce8602c012f150b3aa3c5745da52a72639f1cd0c4f9c1a6baccd403267dab8671e1d61
+DIST thunderbird-148.0.1-ca.xpi 436485 BLAKE2B ff20554f44e0aa0d703756079e45986c54d325b8f38e4388a69e6a8eed66b4bf83cb6d6f7ec1ca7c4252fe4a2dea84eaf40249f74194b8df7b35388bdd446cfb SHA512 5f4fd4ccb2b7034855a6843feef534adcc22a315fdc3cdfa201efa24b977c45183be4de310888dd0ecf20425b12b0b7c65af946bf77aa6046a6ea421c9ad41ea
+DIST thunderbird-148.0.1-cak.xpi 412916 BLAKE2B 8a17f99c670e4d9cd753ab8fa2bdd1e0659a00dc2e9edd9a300699d6079f25e196301b77ba9b23a12e04add291838081b80ee1d7c160ad0d98cc5edee7f6b420 SHA512 76d5df480c8cc8631e9353d9efc1e2edf7bb90a0380f5b11e0292a5b8c07abedff3a40499b8e96f848da0f1e2336d66a63add60a1005c8445bf46d67d34fe9d2
+DIST thunderbird-148.0.1-cs.xpi 527171 BLAKE2B 34de3214e068e340293c9caedbd83bcd10f72e6a570eb6eb58413c282366a52805ca863bb27ed70ced150baa6391b952d4a09823954f7721a0febe047862bc99 SHA512 db3444e43d82e7833ffbffe0681f8f440c97dfff5fa1b6d628603d0da8ca4f7bc8f44bc8f1e4aebe05c8edce5dcaaa66681777d3465fa444cc8f0e3244fc7c57
+DIST thunderbird-148.0.1-cy.xpi 494618 BLAKE2B e172539ac50f4785e37b6c281c8da0a0d65d1e3a62d9469bbde7cce2f0df99a62eb98aa47028378cc8d3ba9bb5ba2b34e56e4c918883346fbb9466254cdb20bb SHA512 1d600a6ea442edc9c7c72fa9cbd1fc092ad3c453d943a805630be98b72466619e37f4d7962496ca69351b957b45c928fdf88e77d00f21b585fe58c2fbdf65f76
+DIST thunderbird-148.0.1-da.xpi 482254 BLAKE2B f796ef987c002d9a3aa107f1dfc00f54b8e21670c7c7dbfd4c82d37e7d7ed11330904ff9dca85c5f6ede7aa39ed86951d5d7561645e444b6ce5fcd802b2c8d0f SHA512 4a722a1185b85dc35217f8954b8863df381b65e9929b3fd5afa73a4be3880ea209cd292f73f152a0ac07d442b112ba80d36caef5f36c6b9492d2b31af71b4b39
+DIST thunderbird-148.0.1-de.xpi 511447 BLAKE2B 1593872c18bc6d4264dd6bfed4a75d31efb250de7e71d73752bf98f1fff1cf90212aa9edfe3e03877b0652bf035a4e33cf8502a43b8daeb509d12bcae163a7d7 SHA512 7f3c93f04c3f689e47050091906a9a752ca0704d54d04677555138591a421b0e779a804cca0f5a69ef860ca6723096d85745d17230dc09512b17557f1ba20098
+DIST thunderbird-148.0.1-dsb.xpi 524279 BLAKE2B 8c06f58009d7b891dd52996cc10a6a5ead26eb4583a61b8098655c515978c8952a38e6e02d8ee31a84a453b35f8bc0994103a72d81720d950b7c032bd2b26c4f SHA512 3cde5b2feb0360760d08ce1ee9bf3c80549acb7d07fdbf5007e8a3aeebd8929e27ab0ebeb58d3560ae8096fa236cfd73a146d7225ebfd948a1e4cee5ce1f48d2
+DIST thunderbird-148.0.1-el.xpi 616183 BLAKE2B b62109028fd1d739d62a54496b2a28fbd51dc78b0ef94647780e7663ced644d43cc5c3be6fb13b6cb5029b858abc8336aa5a542fad0e2ae134ec6695399b041c SHA512 1c8dd4a84087e20cf9d272a58f5048c3e198e9f0e2b43167c4afa4244af553cd1bc0810fc5bf69e56c1d09d1c8b4dd321063dac62a2d1583b301f67841d9ece4
+DIST thunderbird-148.0.1-en-CA.xpi 457767 BLAKE2B 036c0734d3bb59bbd14b06a82e73eb13ceade252390cabe45182115e7777fbcee1d5c33b43686b7a9773628354d03a3ebdd410c6e568b1a253b5a4002960cb3c SHA512 cf6831e5c854a5a0809a70c87862f4712458fd6db768f9c3a259e5160330ee588a358adc5a182a54b3f991d2a141fa9aac26624b462ab5794796aa4f0a3ea6ad
+DIST thunderbird-148.0.1-en-GB.xpi 457631 BLAKE2B b6f3d93e9df6300bb243e0cf50a533d9d6d7076374109ac7018e0bb67fc5a3b27af36ce1c95a4fd65b75d48888924d2b8882031d07a093aefc5c310ca037a942 SHA512 327b7aa83f69c0aa60d5046a2d0693a3f42899d7a0117c0c4796a29118132ce7ae0da49ff2d3309875fa7d1bbbd26588f8023cc0d5086fdad9b364fed0a39f68
+DIST thunderbird-148.0.1-es-AR.xpi 501426 BLAKE2B d745ff7474147c5caffb7fadd4540acfd0bbf52ad5daa7db55e604c0288dc23d01c2a6f041ff3d58846836765d9c9be6070b2145d17c507272c224fb137f8e61 SHA512 c014327c321c2afad14699b62c7185a5ca955073ec466c0a8d0b346d14b5fefd645db573a5c567411a0a5af8a9d971307b822162c644f6628be2c7c0c76406c8
+DIST thunderbird-148.0.1-es-ES.xpi 503700 BLAKE2B 1c59c650ef1c1cca8adb16c57a83df463c6e73e8b7f1fa9122e71fd8a24ca2391031cfc097097ac06a0af79a0592c45b16bfc0d01ecaccbe46cd52c1d92f1a84 SHA512 65ea1aec75b221488cb9d0bdf3d7a200bdf6f0f2616230715f5053795d1efd8b292718db38d2187d7ca1df5d542bac3b4a835b875e9aaea17a3dcf3c3a5f034c
+DIST thunderbird-148.0.1-es-MX.xpi 491208 BLAKE2B 68601c20f6c7541bceaa1036d89eb74e1520e12eb6c09ff759637e6d284d5ce9900ef681d91bdaa833da9cb3b4e447d94b8ec2ce9d182c9510362c0c004461b4 SHA512 8e23f85ab4db2368f41f6f71bb04de4608728021bbf8184f92bd324b2200015dd642cd5dcf89a9f6801de4cea9225f32196184646eaa15285da61914c9f51162
+DIST thunderbird-148.0.1-et.xpi 439460 BLAKE2B b6f27b0be6ff1f586b26d3c419dc86601383a9cfca9c18a00bfb06edaf331fe691e4d39c7bbda28a6be9647cb40f5d3adb5861f81d50a98f39f5044d5131f260 SHA512 e507a6fc20ac8a568f2102b86b9b2a99e960a903f7646d136e4517009f6b94c299913d534a343eba009c82a923ee563317e7dbf5c50f9d75b825fa78b926e8ec
+DIST thunderbird-148.0.1-eu.xpi 482055 BLAKE2B 56b3c60583bb33ef35596c0ab761f6a100836540f5481e6a841ef7e525eb566c6da913756c5575b25ae472c9aa6be4220356a87eb033b84622cd9721c39d1224 SHA512 628adbf46be6ebb2544aafa36073a3c1d29795c5fe44ccc713f12b468dea2aaaea338ab65c8ba215fcf518620fcd11a59533b6e38ac041232b6ca054799394e0
+DIST thunderbird-148.0.1-fi.xpi 478800 BLAKE2B a7209b1f0c8d1512eb7f35fe8fdc19697ef9d7d9ca6bb20887364a605e19c21afe73464b29ddba744c14d9c473e995bcc404fb2df9f49cc7df168f68535ef955 SHA512 d9fa2839ff6a43a52aab1155613631b7725ea4b85a44b99c9ae8f23da2eb76635f89ba18cc3cf44b20015993dd178f4ecf1394cbb0574b54a4c7eee7058afa9a
+DIST thunderbird-148.0.1-fr.xpi 514832 BLAKE2B ed222af9ea09ebf4a9aa1915da3e2e3134939457e662fb4ebfe6a4367c6061a2f7f89b3fd5fcf195ddbd0714c2de61ed2ddc2f28f0cd1573e055e8558d774652 SHA512 d38bcb5e761e349fe7481c22cd5f34e4c1fce808d16b0f5d2d8ab6c2de98e0ad645f3ba2144131f268dde610670d614b6d1467d55e43c1d57fb269f8e0367562
+DIST thunderbird-148.0.1-fy-NL.xpi 496985 BLAKE2B c5aa75e08de55b05841de71a43be5b5cc6f156175713d7f3f4f6d5b7d399ecc93313425826f86d4453c0bf6fe96cccae60736fd05bfdd2186a382e27e7af6e9f SHA512 0aec6996b8e1f5e99e6b6eefb493c92a7c445e2c1feabf96f738b891c8c8c54e449939c9c6fbdece6bb2fd042e1b8974b85f990f802b4835edc5734bd0e0c305
+DIST thunderbird-148.0.1-ga-IE.xpi 372550 BLAKE2B 9cbdad9a905ee19df619300e0a3073a73d990033a59b8af3fb33886038478e8de796a6a8e6beeecd085ea1f63035badc0e55824097ddc33e8d5140648cb22082 SHA512 c6103400db965e4b248f4c69af930310e5f55c9ecae3a7beb304393756fa6564b78f5fcd53612ba133b34e9aacaae46114a248f8717b2a0c0812e5f48d168f3c
+DIST thunderbird-148.0.1-gd.xpi 457787 BLAKE2B 69825a544725f3624793b73cd3c316c9f8856a809fba22e88fbdf9f4e71c61707a192ef3d896102ad6a43929bdf8ac1f5267723bcb2168a7a32ce67a33a2e742 SHA512 d2d9676c87fb4a5ec0cbf0f85d12580b96331af4364605e2c295662dc6e1401a6109df2f7b377629eecc85b93d80ac14001deed10e286224575309f0a05b823d
+DIST thunderbird-148.0.1-gl.xpi 487117 BLAKE2B 7b585434720068cd00f78a19bbaa79e0aa61c42b130886033bf1120654d1a3212560c3a0b0748ff191e3d8ce57a998b866ece6624496e7aa20a7e4299283e5f3 SHA512 3b3e7fe3f8fa4b915c6948e3295e46c7974b7490610bfa957f73351204cbcabe7990799f132061d3111be8538fd721c7340ce8bf8add292a337e4c7a6995ac13
+DIST thunderbird-148.0.1-he.xpi 443915 BLAKE2B d76cd0d46f3d420440abc81251e251b6127177dc6d207ec2d1d170dd97db367720ccce2bbb06a2bbc632636eb53ab1c7a76cbde4bb3ee1f4e13c8e66c06495e2 SHA512 1d7bd92eb1647d52c91f3f00d1ee3ea589607f4b3b90e1f2bd16cf7a0646938ea33c70167d8b57ef05a9920e1cfc2ecc85b9fc14efdf0735e8fd217df66fd0e3
+DIST thunderbird-148.0.1-hr.xpi 476391 BLAKE2B 92d9d3bd78ead76c1249d948bcd099e8a391c77834a67e0929aeb1dcb99324c80e0cd343b789f167a587f525e54bec946417315bba746a21e4a37e1b6686da43 SHA512 7527e30d5280b65aa30cfefa502779b33330de8db19b889afe0faf7aa018caab35a6a759b297915f07353f0911258a68ef204c3c0d44706fdebdedbe8a427fd2
+DIST thunderbird-148.0.1-hsb.xpi 521617 BLAKE2B f6759be2bac19f430b9a07b650cf29befd03c18b5550ee0c8af4dd080a2714813ed2e276161c267cd9e9c7d966a8cabe208245b4f28f339d45e04ac02f59dc09 SHA512 6b989f656a6be6b7ef661384066d09e17216990d28aab71fd959f1a0c319580a9c230c01917058121a47b47282316b20e39e5caacc1dfef00f88ae0dc3148c14
+DIST thunderbird-148.0.1-hu.xpi 524208 BLAKE2B 633ad9b096c99b057de7aa5284b0aee7ff4af6806be246e01c96f055198c5904285820dda43d540e2909b90b001bb47b5b09e15f0c2da66f6493892e0763148a SHA512 4ba8766d01af67367501c37a841d2704b18393884f280fe36f3d87e197c6cd8ab5fe2e9123595c17a70624411a520693406cd11f0acb2b3362044db3e6897bd1
+DIST thunderbird-148.0.1-id.xpi 469884 BLAKE2B 58ead12e5bcfc7c2ec7e47ec07f183d746074dce636b529ce32da3f5e416054a961c4740042a3a282b5179637d125a78524a30fa0b661a20744134fd7ccd86ce SHA512 bb3646e108425cbd203383ca420578df3906e3c27028ef3dec639fc73f1624d474ce70956c32b71919492e7673f8dc33cddf295ef956b48c2a0094c91723f809
+DIST thunderbird-148.0.1-is.xpi 484177 BLAKE2B 79f7e4a5674d0d68a09dff60fa90ed888d309978227123c03709652f8a965e8e971593de8a2fa8e49bffadec3ce33479fd0d5186f2d7c325d2a0e87c04d96445 SHA512 c37fb4b0ba43ea46a0808494212fd31b5550ff62c803b17e7b48ff98622db956ae3a97fb889b4542862df2372ca4a36e08461d7dde95b800d1835d5e0e282ef8
+DIST thunderbird-148.0.1-it.xpi 494619 BLAKE2B ea5c917b60051f422be2354c0d5175d5b247790eda35554e75a5b21fb67c54dd0a06b10061c342192a3b04f3508f37ab468d39185c0cf41c1b0b599f8ed874b5 SHA512 462690edd02548e2fcd9e4068934462edf738860c3d3425dc32e3604cdefb1215225705e03295344d6e63ab44e12cdc59c342c46f0a6a9f2377959e329ab2aef
+DIST thunderbird-148.0.1-ja.xpi 545896 BLAKE2B 33cd9feef0bcd81b72cf01d8724e20bb6daf897646332a2e26fc7f3af1a5c0fc0328ccc41dfbb298b80b8ea3beef896c4a5ed84d6f1cffbf64850fed116933aa SHA512 bcd4fcf4c9303496129d2a9aaf676ef14624ed34ff7c9709a39b1f4953e44a743d3fe2bf8ca215bad9cdd7f487754c4dc8ec8947d0567185bc32d2bf18ae3d1e
+DIST thunderbird-148.0.1-ka.xpi 561647 BLAKE2B a671356aa97e16e480e717e9f2696bace8174441cbd8306f5b3b9b3b43c47f78e901dd8892db6789db3aa490ef959a3849ff9dedc45a4da190e5d4591424730d SHA512 8636f7ed6e8f702a96bb0c0e888a77ada8fafa320807d76b03cc3bb77c39ecc9078da666c037ab97877448b4cd610ec307d9aac741e1b4c62c9f9195e6d77c65
+DIST thunderbird-148.0.1-kab.xpi 467312 BLAKE2B 92c1d92b1d608109888228fd057754c719d21a388683093e17c2ac16772f321fbcf993bab336ef29880407680c1096543c7623a72e1729c936838fe50c7bd60b SHA512 587568e47ca1c0f5c0b2a850d4898e235cd67886c65befc82798b18cc03e957fb01fd7facb4a994f42871ba03979ad4827ff1e46f1bf55396ba7f2068df0d74d
+DIST thunderbird-148.0.1-kk.xpi 586017 BLAKE2B dcaa556967131f9bd527639b0bc805d249cd6ff568aa4a30a53f9bd28b67db7e7007a5938a19c45067ebf3f67331bdba51853a83c943c50a8e1014704843f335 SHA512 37d0206f3514dcfca82ff60e4a96b8aea1d49262671dc41d4d1829e4643e6c3837d7ce48d61ee521e892862fff2239093ce7d478a22d36d45ff26c190eee3482
+DIST thunderbird-148.0.1-ko.xpi 518853 BLAKE2B 2235b5f9a230273daac37e0d30f2e7446060a0bbff8a14dec601ff88c39736fb6c7b5ca2184a8e0b8a91902343b235542ca9c70e8a67f826ce962f7bf5e22cf9 SHA512 cc17d722456db1285be26bf9c414f0c50630266f5349e97b33c3147db626b0f0be3fb256d19f2b417668b97e3cee8045ce2e29bf87ee12c5578ccd524b6c3d6e
+DIST thunderbird-148.0.1-lt.xpi 449262 BLAKE2B 8bf43dfeaf5219bc7ed69084f73e88a0f26f8599b40733e8cae426e38538a9db4ee227d386da168b84fd5ff01c528a5295021be082e39444a1ed3a8c21597146 SHA512 1c7fa51b8fcc62b5afc7b8ba077ae8823748ccbc3e97db17ffa06940121ead36bd40597d2d1ca800195909ab059081874598019038442950433ec1f0a8d14ce2
+DIST thunderbird-148.0.1-lv.xpi 387023 BLAKE2B 2521439513e794fcc2324d721ec1e69f128c0ba9fbfa5981cb8ee2122d59c2edc79027afcc56a53187dee0337c7f73df5da4531b7993e4e003024deb5af1ac84 SHA512 2a312148dcb0d5cd216aab6899c7003448d02e6c9f8bb2824ca2ceb0fd2437996594f05e932f79950598ed6ed7c8fd49a7f93022049948ba6d14735bcfe11d2c
+DIST thunderbird-148.0.1-ms.xpi 348850 BLAKE2B e7aede13567c38c4ff4ae4466e14bde1a40238371e3436fdf6bfd743e6c3295b5a13a58f4a96bfacd5739fc52a58aead793a6fd7542fb2e5ed7abc6c649aff3a SHA512 bece4787926f2db2f1348a6bd9607539a38a65963eb10e5d56f671846c9cb6ea2f2877a19f3f847d610c216db321b7a0735f200cbdb0e7b9f73c6e4d6a24e59e
+DIST thunderbird-148.0.1-nb-NO.xpi 482118 BLAKE2B 7315a41bceea35c16fe10ab8942593944aa3900e5d96d2dacb1a231d0580b418c99b5b9880b0fd70ff6484c1db80ea20d72bd1dc92b66abee7cab3df22fc5a08 SHA512 fe48f1138c1339b679c7e7abdc40ff39054f985e9a958b4ba7700ffb7ee5b1fc0c015655af8bc453550d42e409deea810a3413238ce1311e402f38b399e8785d
+DIST thunderbird-148.0.1-nl.xpi 488322 BLAKE2B a231b13188c1259d5c67a3124f93e00862092ea9173d52f6c966a105690dc1f5e56d78eadd7ada03b02ef37e558647bf542ce7617471b26102c6bec0b1fc7218 SHA512 faf727f5b1e802326d0468f9e412f015457c59ac755d50f472836eadf77e86645f2b51a5fce061087e256af862811bf9079407d1a8e84c9f478327da48358016
+DIST thunderbird-148.0.1-nn-NO.xpi 486012 BLAKE2B d3b40acb4d9279a11c85fae60278bdbabb9a9f695f72ef7683ba3ca80a4dc525d902afd320eba80a18969bfe8fd046b289c469026dce53d560f1caefcfd9c253 SHA512 3479770eeff35d696547e61615a6317b8771f98c80c2de5f0577f3cf4d6f42844db70fb95db6852eb0050ffb428e21a55f3ed26a3515d836cc4ee1ce1d2c551c
+DIST thunderbird-148.0.1-pa-IN.xpi 435826 BLAKE2B 3331063c1461485752ca9dd966cbe0cb981b70e5a351f07b12ce36e35ff084d751e13f1019712a97c281db8a7e811cbb9abe2d6cd3781d8f633a765f975672ee SHA512 c35b5ce12b438f14e367a029ac7b216a689e9cd6cd508c241c65318431aff3155f7782a2cb649582acfc6817736f6890a8601e04f39be46f7be947ba89f2c8f9
+DIST thunderbird-148.0.1-pl.xpi 522379 BLAKE2B aa484bb103cc024aafbb637aaf7b2b396ba61db4ebc45e136611d1afc5bd7e05da0640236e602c3a74fe78209653c4c73611f1761f481abd17c5474d66333834 SHA512 3a2faac6831fbc4354eb236cd0350b2f516df74f7598d9934eb6246ac7b632810c57c5dd69544e960a9767f942be7ebbaaa67cb1a7b65ed7e570596e47f59374
+DIST thunderbird-148.0.1-pt-BR.xpi 496288 BLAKE2B d2d108c964afc4a7cce9587de6ad6ae76560b39e16a4c16eb8194d35dc5caa5b2b44134752f68b793e235f91cf33dfc7ede2fdadbb0c8039396ca77e4f07b06c SHA512 392afc6b2d22ad6306bc587b9eb466266dd048ceeaee24ff432eb0a7f944aeb67566bb01af150fb153cd4b0729b7b798190bff1b4e5bdeaef30d046a6cb9882c
+DIST thunderbird-148.0.1-pt-PT.xpi 494067 BLAKE2B 8a7ba402f4863cf4722780481a702b5aa42fc8644f5027b4d16311a10b1d52ba82f44652324fb823ee9a406f9e0705a4904e20c485245498b46c0409a732aa84 SHA512 fe0cb975cde7f1594a1468a6a3447b10ab6c69c48592af9ad23d80cd4b915b10c99d6ae8a02c0d993d4246d64ddfa771b1f3b590daffcd3bacba96d550fced84
+DIST thunderbird-148.0.1-rm.xpi 485795 BLAKE2B f942a76cb61ef6bd48376ed81b0fc3145d0d7d301b8dceb68badb6cae3974bc44c6e3461644ff0de5fd41d05d1f3ca35aa8d3dcdebf73b70f9d984ef5b603756 SHA512 62e5fcf3a70969c69c87dac7b63093174f8019e286fd35cd90bb4a6abdf0891a80a7514c246d59487481519ac92a57fbd2cdb173126e8df2906b4aeeaa137397
+DIST thunderbird-148.0.1-ro.xpi 507593 BLAKE2B 5cd7e91e95bf726860b98c5e18fe87766df966f4aa27a2c47d50780d9989cc1d82b4ec249dafee4daf0fb7fe944ceb540bda7bbe7a06a8b1947a74f8ea9a8f8c SHA512 778ca672731f5d28b3b22bba0b8677f2daf665ef9b08ee5bae00b01029b49e6265b300b6ae4f48a3dc20eb18c0e2b9ade4fbe4dd868effa4b020c0b7f1e7e639
+DIST thunderbird-148.0.1-ru.xpi 600965 BLAKE2B 3d9c9af19c646671238c9bafa649f17158cf30c33e8843f4deab99d168eb06ddf8f4be236d31ea4b0e07e68637ecc264a60755edd597c3705d53430ac230ac13 SHA512 9f6f26b3d403dd2afef62249d8209988d5b86fe6be2b606a882c805b5745489d581de816bd39390a1b879b09b8a84c308cb905211c6c1c3e1e91b8fd1a801b48
+DIST thunderbird-148.0.1-sk.xpi 526861 BLAKE2B 76b6dba1064283862e0b04b147da4025983ea24137b6431a69f29b06d9354fa1229f1820492b00f0e38f27026e8e45e8469e5e83788f4245483e62153b07fdb4 SHA512 038b017830264f878a1b1a1f12f5dd21982edf781d446146751d3d60ce9ce67b973900a32a605e110ab76f29741ddaf37c5961308097c6f3e30dd9c726181eb1
+DIST thunderbird-148.0.1-sl.xpi 491096 BLAKE2B e2b258e1da33a523bdc9cc1de910fb0475afd444a51439bf35bca31a1bb0260c6e2bff3807578f85c9ce40c00a0064f2206979f677f738eff12877ed2f50fb68 SHA512 4910566806adb5b3bc3b5faf4218687159f75f2ebef70a622634f49cec0d04a6254cdbfde2ef0970d1ea2207341712ce217dbd8ad7e29cf303e04618d630dd00
+DIST thunderbird-148.0.1-sq.xpi 512107 BLAKE2B 17ff3991b866519614850067c17e5e34b907619a99694565eb0c2a737c86f6aba049472439544777d9801f386b5e9f4b92809d9f6a1f2fa93963347e17d067c9 SHA512 cb31ada00c9b353e69f65e69feb986ae2caed0f8c459a58a03734c9c96231631b97a164bf544363ba977fbce3ab440923b3b0822dee0ddf8501503cead90ed88
+DIST thunderbird-148.0.1-sr.xpi 491177 BLAKE2B a2299b66b27e44769b6848e15ba8804837971874675f8ee06d8e6c46dd4ef0084c62f21f2addca123b44d477c40a695537dcd2ba838e621ba0610ba312201d9b SHA512 a7f665c9697133a3ebbb27c6ae0d570527f9d4ae49da0dbb49c1ded1143902821393b3ea71938b19c30aacd67781a4d6cec327807c7ddddcc32a81ff361a0cc9
+DIST thunderbird-148.0.1-sv-SE.xpi 490511 BLAKE2B b4b6af6cbc73143c671a901a53240db98d64e0add2cdb7c4fa077364bb42d5f1bf70935db41bba3c45a401c48db6511e501aadb1b1838d6bf7b969fb8cc27508 SHA512 fd96cf75e534ec84c9f53e17bd63a05fe11f88422425c13bfa09f085af278718506ad1661f5a81c5496a54b431dc117740abfe347314be228da89855359be7fb
+DIST thunderbird-148.0.1-th.xpi 574541 BLAKE2B 5872f08bb10268668662b344b02dafc1c124293aa8ad015f8c110dd9336da1b9b5ac3bf20eeb853023ebf8a4ac1990c89ae192a61e3138974c930e2f1a91a529 SHA512 7dc3e00bdf759dd85790fdf976090cb15d6879ef5f85651e1a0b82699ac99490b227693808db78ed2391d758db2a3cc40cd41864d7de4404d1f36ff3a9bc21ba
+DIST thunderbird-148.0.1-tr.xpi 502283 BLAKE2B 5599d15272d8996e6250c9a6943a7f5c9080cd39d6f98cd6f263a176ae7df8801903d6a300d3fb8a7d4a08c0b3767df59cc4fc68e5298b4626a2482acbd3d911 SHA512 0fbe62a82ae01309ab3e91ff8cc37764a7d560bfbbe77df109d5ce93f150ccae0cfdbe1c63e8143ecba4367b507f095f6c62f2586350e971af0c5f26c6c56ede
+DIST thunderbird-148.0.1-uk.xpi 580629 BLAKE2B 2782f3f02f482d17ae5654c9c3a886f1cc5211fa5a7f8664b1b270e9b7588544fecd500ddb8d34e7337046c03e81356877eaa2203273f8486d8cf10a892a45db SHA512 6c1b2e34a3a0441db33fe3f6e2941fd5552edfaf0e10bacf16fb077d1fba1a6337b3e7cfbbbb25711b87509dfecec281652d46d8b2b40aea9c4c123e7526a68e
+DIST thunderbird-148.0.1-uz.xpi 351140 BLAKE2B e0c7af8a6db5afbea8ddfea26797744c6bae765759fe9eb90016314d5de389e4d449998451499ba528c00d6355edd0a95a87a2f129213a2ce51374d8f5897d36 SHA512 1532c15f6260917e4188ef29e01f6baa3b6d8b6d81cd175ec37aeaf79ebe783a956a49343672cfa0664721199d81f0ffd8eb5ac2153b6fa8ca0a270fb3e5798e
+DIST thunderbird-148.0.1-vi.xpi 524775 BLAKE2B e86423ce403ff453f42739c9e53f0661c1c520dbfa76b043ae3656e7bff25945aa5bdd64315f70b6f1ffd6a5ce86b9b8ef09b44879766b63b13a41035eaeacf7 SHA512 cc95796e57a39d606e6d0bb5d065ba214572ca00f66aa7a540f4cafd61231e3105eba6453971c36dddc2506aef9b0a8768c909a09bc1e658d6b6760d180d2d2f
+DIST thunderbird-148.0.1-zh-CN.xpi 513663 BLAKE2B 8b35554204d70922980b96881a3296293447e9e3f83bbb7dc24603e5c15fd6726c4f0b918f22955c6ba8a7debcd5a4e79e1eaf4c27f0cb3406a91b9e47a1c426 SHA512 c221392e6c8bccc8b6b032cb32e5fc2e623bf58eb7d61afda6ef7e944d4d1024ae323150db49dc07d81e7c9c9aaf868a212cc6d3be79df34f77b2ed25281a0ed
+DIST thunderbird-148.0.1-zh-TW.xpi 517420 BLAKE2B 6b531fe087c31bab318997d1ec56c9d49d4b982d52c84533504b850f8b1e60dfb5a23d96c314401e4f75e030401d3748feaf132e88bce859c8967ed7caa617f1 SHA512 b81571146fa71306f0e11352b58be011e676ecdbee054e15e772dc8fca882937566d73ee6738569cf4526199bb161f037840cee9777cf6dc5af582e65d51b8e3
+DIST thunderbird-148.0.1.source.tar.xz 792079456 BLAKE2B 171af9116d0faefc7389c4007e61c242ac2ebb5d850a637a3e31a59d13042e7a91b32ebdb7a93d28454965af9e5a84b44f95a62c0b112251860d6a6c4cbcf18d SHA512 4f6e721b0858bece740f04744d10d8bb0b0673d2ebfe5624d3797e28e394510a8518dc31fc6a121ba7ed8a5a44953efefe3a74071e9f967c22be17cee45b3faf
 DIST thunderbird-148.0.source.tar.xz 796239120 BLAKE2B 473a9544ed3cdcdf43627a6a189c3e9bef4bea3923ec29ec5b96c0c7015ba3768f6e7108e616743dc354116ec64ed59c5483b8b44c08f9c34d92855f21475f97 SHA512 ec5e586206ef217f37eb6985356994e7e7c9db6090f57d5b4c43a3a5dc0e1f5a56c0e7080d86fb895446845f9c9b948284f7417afebcf6e6120eca0e1ed238f3
diff --git a/mail-client/thunderbird/thunderbird-148.0.1.ebuild b/mail-client/thunderbird/thunderbird-148.0.1.ebuild
new file mode 100644
index 0000000000000..7cd61f42a3890
--- /dev/null
+++ b/mail-client/thunderbird/thunderbird-148.0.1.ebuild
@@ -0,0 +1,1163 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+FIREFOX_PATCHSET="firefox-148-patches-01t.tar.xz"
+
+LLVM_COMPAT=( 20 21 )
+
+PYTHON_COMPAT=( python3_{11..14} )
+PYTHON_REQ_USE="ncurses,sqlite,ssl"
+
+RUST_MIN_VER="1.87.0"
+RUST_NEEDS_LLVM=1
+
+WANT_AUTOCONF="2.1"
+
+VIRTUALX_REQUIRED="manual"
+
+# Thunderbird will have separate release and esr channels, matching Firefox's rapid and esr.
+MOZ_ESR=
+
+MOZ_PV=${PV}
+MOZ_PV_SUFFIX=
+if [[ ${PV} =~ (_(alpha|beta|rc).*)$ ]] ; then
+	MOZ_PV_SUFFIX=${BASH_REMATCH[1]}
+
+	# Convert the ebuild version to the upstream Mozilla version
+	MOZ_PV="${MOZ_PV/_alpha/a}" # Handle alpha for SRC_URI
+	MOZ_PV="${MOZ_PV/_beta/b}"  # Handle beta for SRC_URI
+	MOZ_PV="${MOZ_PV%%_rc*}"    # Handle rc for SRC_URI
+fi
+
+if [[ -n ${MOZ_ESR} ]] ; then
+	# ESR releases have slightly different version numbers
+	MOZ_PV="${MOZ_PV}esr"
+fi
+
+MOZ_PN="${PN%-bin}"
+MOZ_P="${MOZ_PN}-${MOZ_PV}"
+MOZ_PV_DISTFILES="${MOZ_PV}${MOZ_PV_SUFFIX}"
+MOZ_P_DISTFILES="${MOZ_PN}-${MOZ_PV_DISTFILES}"
+
+inherit check-reqs desktop eapi9-ver flag-o-matic gnome2-utils linux-info llvm-r1 \
+	multiprocessing optfeature pax-utils python-any-r1 rust toolchain-funcs virtualx xdg
+
+DESCRIPTION="Thunderbird Mail Client"
+HOMEPAGE="https://www.thunderbird.net/"
+
+MOZ_SRC_BASE_URI="https://archive.mozilla.org/pub/${MOZ_PN}/releases/${MOZ_PV}"
+
+if [[ ${PV} == *_rc* ]] ; then
+	MOZ_SRC_BASE_URI="https://archive.mozilla.org/pub/${MOZ_PN}/candidates/${MOZ_PV}-candidates/build${PV##*_rc}"
+fi
+
+PATCH_URIS=(
+	https://dev.gentoo.org/~juippis/mozilla/patchsets/${FIREFOX_PATCHSET}
+)
+
+SRC_URI="${MOZ_SRC_BASE_URI}/source/${MOZ_P}.source.tar.xz -> ${MOZ_P_DISTFILES}.source.tar.xz
+	${PATCH_URIS[@]}"
+S="${WORKDIR}/${PN}-${PV%_*}"
+
+if [[ -n ${MOZ_ESR} ]] ; then
+	SLOT="0/esr"
+else
+	SLOT="0/stable"
+fi
+
+LICENSE="MPL-2.0 GPL-2 LGPL-2.1"
+KEYWORDS="~amd64 ~arm64 ~loong ~ppc64 ~x86"
+
+IUSE="+clang debug eme-free hardened hwaccel jack libproxy pgo pulseaudio sndio selinux"
+IUSE+=" +system-av1 +system-harfbuzz +system-icu +system-jpeg +system-libevent +system-libvpx"
+IUSE+=" system-pipewire system-png +system-webp wayland wifi +X"
+
+# Thunderbird-only USE flags.
+IUSE+=" +system-librnp"
+
+# "-system-librnp" requires clang, bmo#2006910
+REQUIRED_USE="|| ( X wayland )
+	!system-librnp? ( clang )
+	debug? ( !system-av1 )"
+
+TB_ONLY_DEPEND="selinux? ( sec-policy/selinux-thunderbird )
+	!system-librnp? ( dev-libs/jsoncpp )
+	system-librnp? ( >=dev-util/librnp-0.17.1 )"
+BDEPEND="${PYTHON_DEPS}
+	$(llvm_gen_dep '
+		llvm-core/clang:${LLVM_SLOT}
+		llvm-core/llvm:${LLVM_SLOT}
+		clang? (
+			llvm-core/lld:${LLVM_SLOT}
+			pgo? ( llvm-runtimes/compiler-rt-sanitizers:${LLVM_SLOT}[profile] )
+		)
+	')
+	app-alternatives/awk
+	app-arch/unzip
+	app-arch/zip
+	>=dev-util/cbindgen-0.29.1
+	net-libs/nodejs
+	virtual/pkgconfig
+	amd64? ( >=dev-lang/nasm-2.14 )
+	x86? ( >=dev-lang/nasm-2.14 )
+	pgo? (
+		X? (
+			sys-devel/gettext
+			x11-base/xorg-server[xvfb]
+			x11-apps/xhost
+		)
+		!X? (
+			gui-wm/tinywl
+			x11-misc/xkeyboard-config
+		)
+	)"
+COMMON_DEPEND="${TB_ONLY_DEPEND}
+	>=app-accessibility/at-spi2-core-2.46.0:2
+	dev-libs/glib:2
+	dev-libs/libffi:=
+	>=dev-libs/nss-3.120.1
+	>=dev-libs/nspr-4.38
+	media-libs/alsa-lib
+	media-libs/fontconfig
+	media-libs/freetype
+	media-libs/mesa
+	media-video/ffmpeg
+	sys-apps/dbus
+	virtual/zlib:=
+	virtual/freedesktop-icon-theme
+	x11-libs/cairo
+	x11-libs/gdk-pixbuf:2
+	x11-libs/libdrm
+	x11-libs/pango
+	x11-libs/pixman
+	jack? ( virtual/jack )
+	pulseaudio? (
+		|| (
+			media-libs/libpulse
+			>=media-sound/apulse-0.1.12-r4[sdk]
+		)
+	)
+	libproxy? ( net-libs/libproxy )
+	selinux? ( sec-policy/selinux-mozilla )
+	sndio? ( >=media-sound/sndio-1.8.0-r1 )
+	system-av1? (
+		>=media-libs/dav1d-1.0.0:=
+		>=media-libs/libaom-1.0.0:=
+	)
+	system-harfbuzz? (
+		>=media-gfx/graphite2-1.3.13
+		>=media-libs/harfbuzz-2.8.1:0=
+	)
+	system-icu? ( >=dev-libs/icu-78.1:= )
+	system-jpeg? ( >=media-libs/libjpeg-turbo-1.2.1:= )
+	system-libevent? ( >=dev-libs/libevent-2.1.12:0=[threads(+)] )
+	system-libvpx? ( >=media-libs/libvpx-1.8.2:0=[postproc] )
+	system-pipewire? ( media-video/pipewire:= )
+	system-png? ( >=media-libs/libpng-1.6.45:0=[apng] )
+	system-webp? ( >=media-libs/libwebp-1.1.0:0= )
+	wayland? (
+		>=media-libs/libepoxy-1.5.10-r1
+		x11-libs/gtk+:3[wayland]
+	)
+	wifi? (
+		kernel_linux? (
+			|| (
+				net-misc/networkmanager
+				net-misc/connman[networkmanager]
+			)
+		)
+	)
+	X? (
+		virtual/opengl
+		x11-libs/cairo[X]
+		x11-libs/gtk+:3[X]
+		x11-libs/libX11
+		x11-libs/libXcomposite
+		x11-libs/libXdamage
+		x11-libs/libXext
+		x11-libs/libXfixes
+		x11-libs/libXrandr
+		x11-libs/libxcb:=
+	)"
+RDEPEND="${COMMON_DEPEND}
+	jack? ( virtual/jack )"
+DEPEND="${COMMON_DEPEND}
+	X? (
+		x11-base/xorg-proto
+		x11-libs/libICE
+		x11-libs/libSM
+	)"
+
+llvm_check_deps() {
+	if ! has_version -b "llvm-core/clang:${LLVM_SLOT}" ; then
+		einfo "llvm-core/clang:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+		return 1
+	fi
+
+	if use clang && ! tc-ld-is-mold ; then
+		if ! has_version -b "llvm-core/lld:${LLVM_SLOT}" ; then
+			einfo "llvm-core/lld:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+			return 1
+		fi
+	fi
+
+	if use pgo ; then
+		if ! has_version -b "=llvm-runtimes/compiler-rt-sanitizers-${LLVM_SLOT}*[profile]" ; then
+			einfo "=llvm-runtimes/compiler-rt-sanitizers-${LLVM_SLOT}*[profile] is missing!" >&2
+			einfo "Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+			return 1
+		fi
+	fi
+
+	einfo "Using LLVM slot ${LLVM_SLOT} to build" >&2
+}
+
+MOZ_LANGS=(
+	af ar ast be bg br ca cak cs cy da de dsb
+	el en-CA en-GB en-US es-AR es-ES es-MX et eu
+	fi fr fy-NL ga-IE gd gl he hr hsb hu
+	id is it ja ka kab kk ko lt lv ms nb-NO nl nn-NO
+	pa-IN pl pt-BR pt-PT rm ro ru
+	sk sl sq sr sv-SE th tr uk uz vi zh-CN zh-TW
+)
+
+mozilla_set_globals() {
+	# https://bugs.gentoo.org/587334
+	local MOZ_TOO_REGIONALIZED_FOR_L10N=(
+		fy-NL ga-IE gu-IN hi-IN hy-AM nb-NO ne-NP nn-NO pa-IN sv-SE
+	)
+
+	local lang xflag
+	for lang in "${MOZ_LANGS[@]}" ; do
+		# en and en_US are handled internally
+		if [[ ${lang} == en ]] || [[ ${lang} == en-US ]] ; then
+			continue
+		fi
+
+		# strip region subtag if $lang is in the list
+		if has ${lang} "${MOZ_TOO_REGIONALIZED_FOR_L10N[@]}" ; then
+			xflag=${lang%%-*}
+		else
+			xflag=${lang}
+		fi
+
+		SRC_URI+=" l10n_${xflag/[_@]/-}? ("
+		SRC_URI+=" ${MOZ_SRC_BASE_URI}/linux-x86_64/xpi/${lang}.xpi -> ${MOZ_P_DISTFILES}-${lang}.xpi"
+		SRC_URI+=" )"
+		IUSE+=" l10n_${xflag/[_@]/-}"
+	done
+}
+mozilla_set_globals
+
+moz_clear_vendor_checksums() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -ne 1 ]] ; then
+		die "${FUNCNAME} requires exact one argument"
+	fi
+
+	einfo "Clearing cargo checksums for ${1} ..."
+
+	sed -i \
+		-e 's/\("files":{\)[^}]*/\1/' \
+		"${S}"/third_party/rust/${1}/.cargo-checksum.json || die
+}
+
+moz_install_xpi() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 2 ]] ; then
+		die "${FUNCNAME} requires at least two arguments"
+	fi
+
+	local DESTDIR=${1}
+	shift
+
+	insinto "${DESTDIR}"
+
+	local emid xpi_file xpi_tmp_dir
+	for xpi_file in "${@}" ; do
+		emid=
+		xpi_tmp_dir=$(mktemp -d --tmpdir="${T}")
+
+		# Unpack XPI
+		unzip -qq "${xpi_file}" -d "${xpi_tmp_dir}" || die
+
+		# Determine extension ID
+		if [[ -f "${xpi_tmp_dir}/install.rdf" ]] ; then
+			emid=$(sed -n -e '/install-manifest/,$ { /em:id/!d; s/.*[\">]\([^\"<>]*\)[\"<].*/\1/; p; q }' "${xpi_tmp_dir}/install.rdf")
+			[[ -z "${emid}" ]] && die "failed to determine extension id from install.rdf"
+		elif [[ -f "${xpi_tmp_dir}/manifest.json" ]] ; then
+			emid=$(sed -n -e 's/.*"id": "\([^"]*\)".*/\1/p' "${xpi_tmp_dir}/manifest.json")
+			[[ -z "${emid}" ]] && die "failed to determine extension id from manifest.json"
+		else
+			die "failed to determine extension id"
+		fi
+
+		einfo "Installing ${emid}.xpi into ${ED}${DESTDIR} ..."
+		newins "${xpi_file}" "${emid}.xpi"
+	done
+}
+
+mozconfig_add_options_ac() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 2 ]] ; then
+		die "${FUNCNAME} requires at least two arguments"
+	fi
+
+	local reason=${1}
+	shift
+
+	local option
+	for option in ${@} ; do
+		echo "ac_add_options ${option} # ${reason}" >>${MOZCONFIG}
+	done
+}
+
+mozconfig_add_options_mk() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 2 ]] ; then
+		die "${FUNCNAME} requires at least two arguments"
+	fi
+
+	local reason=${1}
+	shift
+
+	local option
+	for option in ${@} ; do
+		echo "mk_add_options ${option} # ${reason}" >>${MOZCONFIG}
+	done
+}
+
+mozconfig_use_enable() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 1 ]] ; then
+		die "${FUNCNAME} requires at least one arguments"
+	fi
+
+	local flag=$(use_enable "${@}")
+	mozconfig_add_options_ac "$(use ${1} && echo +${1} || echo -${1})" "${flag}"
+}
+
+mozconfig_use_with() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 1 ]] ; then
+		die "${FUNCNAME} requires at least one arguments"
+	fi
+
+	local flag=$(use_with "${@}")
+	mozconfig_add_options_ac "$(use ${1} && echo +${1} || echo -${1})" "${flag}"
+}
+
+virtwl() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	[[ $# -lt 1 ]] && die "${FUNCNAME} needs at least one argument"
+	[[ -n $XDG_RUNTIME_DIR ]] || die "${FUNCNAME} needs XDG_RUNTIME_DIR to be set; try xdg_environment_reset"
+	tinywl -h >/dev/null || die 'tinywl -h failed'
+
+	local VIRTWL VIRTWL_PID
+	coproc VIRTWL { WLR_BACKENDS=headless exec tinywl -s 'echo $WAYLAND_DISPLAY; read _; kill $PPID'; }
+	local -x WAYLAND_DISPLAY
+	read WAYLAND_DISPLAY <&${VIRTWL[0]}
+
+	debug-print "${FUNCNAME}: $@"
+	"$@"
+	local r=$?
+
+	[[ -n $VIRTWL_PID ]] || die "tinywl exited unexpectedly"
+	exec {VIRTWL[0]}<&- {VIRTWL[1]}>&-
+	return $r
+}
+
+pkg_pretend() {
+	if [[ ${MERGE_TYPE} != binary ]] ; then
+		# Ensure we have enough disk space to compile
+		if use pgo || use debug ; then
+			CHECKREQS_DISK_BUILD="14300M"
+		elif tc-is-lto ; then
+			CHECKREQS_DISK_BUILD="10600M"
+		else
+			CHECKREQS_DISK_BUILD="7400M"
+		fi
+
+		check-reqs_pkg_pretend
+	fi
+}
+
+pkg_setup() {
+
+	# Get LTO from environment; export after this phase for use in src_configure (etc)
+	use_lto=no
+
+	if [[ ${MERGE_TYPE} != binary ]] ; then
+
+		if tc-is-lto; then
+			use_lto=yes
+			# LTO is handled via configure
+			filter-lto
+		fi
+
+		if use pgo ; then
+			if ! has userpriv ${FEATURES} ; then
+				eerror "Building ${PN} with USE=pgo and FEATURES=-userpriv is not supported!"
+			fi
+		fi
+
+		if [[ ${use_lto} = yes ]] ; then
+			# -Werror=lto-type-mismatch -Werror=odr are going to fail with GCC,
+			# bmo#1516758, bgo#942288
+			filter-flags -Werror=lto-type-mismatch -Werror=odr
+		fi
+
+		if use pgo || use debug ; then
+			CHECKREQS_DISK_BUILD="14300M"
+		elif [[ ${use_lto} == "yes" ]] ; then
+			CHECKREQS_DISK_BUILD="10600M"
+		else
+			CHECKREQS_DISK_BUILD="7400M"
+		fi
+
+		check-reqs_pkg_setup
+		llvm-r1_pkg_setup
+		rust_pkg_setup
+		python-any-r1_pkg_setup
+
+		# Avoid PGO profiling problems due to enviroment leakage
+		# These should *always* be cleaned up anyway
+		unset \
+			DBUS_SESSION_BUS_ADDRESS \
+			DISPLAY \
+			ORBIT_SOCKETDIR \
+			SESSION_MANAGER \
+			XAUTHORITY \
+			XDG_CACHE_HOME \
+			XDG_SESSION_COOKIE
+
+		# Build system is using /proc/self/oom_score_adj, bug #604394
+		addpredict /proc/self/oom_score_adj
+
+		if use pgo ; then
+			# Update 105.0: "/proc/self/oom_score_adj" isn't enough anymore with pgo, but not sure
+			# whether that's due to better OOM handling by Firefox (bmo#1771712), or portage
+			# (PORTAGE_SCHEDULING_POLICY) update...
+			addpredict /proc
+
+			# Clear tons of conditions, since PGO is hardware-dependant.
+			addpredict /dev
+		fi
+
+		if ! mountpoint -q /dev/shm ; then
+			# If /dev/shm is not available, configure is known to fail with
+			# a traceback report referencing /usr/lib/pythonN.N/multiprocessing/synchronize.py
+			ewarn "/dev/shm is not mounted -- expect build failures!"
+		fi
+
+		# Google API keys (see http://www.chromium.org/developers/how-tos/api-keys)
+		# Note: These are for Gentoo Linux use ONLY. For your own distribution, please
+		# get your own set of keys.
+		if [[ -z "${MOZ_API_KEY_GOOGLE+set}" ]] ; then
+			MOZ_API_KEY_GOOGLE="AIzaSyDEAOvatFogGaPi0eTgsV_ZlEzx0ObmepsMzfAc"
+		fi
+
+		if [[ -z "${MOZ_API_KEY_LOCATION+set}" ]] ; then
+			MOZ_API_KEY_LOCATION="AIzaSyB2h2OuRgGaPicUgy5N-5hsZqiPW6sH3n_rptiQ"
+		fi
+
+		# Mozilla API keys (see https://location.services.mozilla.com/api)
+		# Note: These are for Gentoo Linux use ONLY. For your own distribution, please
+		# get your own set of keys.
+		if [[ -z "${MOZ_API_KEY_MOZILLA+set}" ]] ; then
+			MOZ_API_KEY_MOZILLA="edb3d487-3a84-46m0ap1e3-9dfd-92b5efaaa005"
+		fi
+
+		# Ensure we use C locale when building, bug #746215
+		export LC_ALL=C
+	fi
+
+	export use_lto
+}
+
+src_unpack() {
+	local _lp_dir="${WORKDIR}/language_packs"
+	local _src_file
+
+	if [[ ! -d "${_lp_dir}" ]] ; then
+		mkdir "${_lp_dir}" || die
+	fi
+
+	for _src_file in ${A} ; do
+		if [[ ${_src_file} == *.xpi ]]; then
+			cp "${DISTDIR}/${_src_file}" "${_lp_dir}" || die "Failed to copy '${_src_file}' to '${_lp_dir}'!"
+		else
+			unpack ${_src_file}
+		fi
+	done
+}
+
+src_prepare() {
+	if [[ ${use_lto} == "yes" ]]; then
+		rm -v "${WORKDIR}"/firefox-patches/*-LTO-Only-enable-LTO-*.patch || die
+	fi
+
+	# Workaround for bgo#915651 and bmo#1988166 on musl
+	if use elibc_glibc ; then
+		rm -v "${WORKDIR}"/firefox-patches/*bgo-748849-RUST_TARGET_override.patch || die
+		rm -v "${WORKDIR}"/firefox-patches/*bmo-1988166-musl-remove-nonexisting-system-header-req.patch || die
+	fi
+
+	# Enable jpeg-xl only in Firefox.
+	rm -v "${WORKDIR}"/firefox-patches/*bgo-928126-enable-jxl.patch || die
+
+	eapply "${WORKDIR}/firefox-patches"
+
+	# Allow user to apply any additional patches without modifing ebuild
+	eapply_user
+
+	# Make cargo respect MAKEOPTS
+	export CARGO_BUILD_JOBS="$(makeopts_jobs)"
+
+	# Workaround for bgo#915651
+	if ! use elibc_glibc ; then
+		if use amd64 ; then
+			export RUST_TARGET="x86_64-unknown-linux-musl"
+		elif use x86 ; then
+			export RUST_TARGET="i686-unknown-linux-musl"
+		elif use arm64 ; then
+			export RUST_TARGET="aarch64-unknown-linux-musl"
+		elif use loong; then
+			# Only the LP64D ABI of LoongArch64 is actively supported among
+			# the wider Linux ecosystem, so the assumption is safe.
+			export RUST_TARGET="loongarch64-unknown-linux-musl"
+		elif use ppc64 ; then
+			export RUST_TARGET="powerpc64le-unknown-linux-musl"
+		elif use riscv ; then
+			# We can pretty safely rule out any 32-bit riscvs, but 64-bit riscvs also have tons of
+			# different ABIs available. riscv64gc-unknown-linux-musl seems to be the best working
+			# guess right now though.
+			elog "riscv detected, forcing a riscv64 target for now."
+			export RUST_TARGET="riscv64gc-unknown-linux-musl"
+		else
+			die "Unknown musl chost, please post a new bug with your rustc -vV along with emerge --info"
+		fi
+	fi
+
+	# Make LTO respect MAKEOPTS
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/build/moz.configure/lto-pgo.configure || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/chromium/build/toolchain/get_cpu_count.py || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/python/gyp/pylib/gyp/input.py || die "Failed sedding multiprocessing.cpu_count"
+
+	# sed-in toolchain prefix
+	sed -i \
+		-e "s/objdump/${CHOST}-objdump/" \
+		"${S}"/python/mozbuild/mozbuild/configure/check_debug_ranges.py || die "sed failed to set toolchain prefix"
+
+	sed -i \
+		-e 's/ccache_stats = None/return None/' \
+		"${S}"/python/mozbuild/mozbuild/controller/building.py || die "sed failed to disable ccache stats call"
+
+	einfo "Removing pre-built binaries ..."
+
+	find "${S}"/third_party -type f \( -name '*.so' -o -name '*.o' \) -print -delete || die
+
+	# Clear checksums from cargo crates we've manually patched.
+	# moz_clear_vendor_checksums xyz
+	# glslopt: bgo#969412, bgo#969871
+	moz_clear_vendor_checksums glslopt
+	# TB-specific
+	sed -i \
+		-e 's/\("files":{\)[^}]*/\1/' \
+		"${S}"/comm/third_party/rust/glslopt/.cargo-checksum.json || die
+
+	# Create build dir
+	BUILD_DIR="${WORKDIR}/${PN}_build"
+	mkdir -p "${BUILD_DIR}" || die
+
+	# Write API keys to disk
+	echo -n "${MOZ_API_KEY_GOOGLE//gGaPi/}" > "${S}"/api-google.key || die
+	echo -n "${MOZ_API_KEY_LOCATION//gGaPi/}" > "${S}"/api-location.key || die
+	echo -n "${MOZ_API_KEY_MOZILLA//m0ap1/}" > "${S}"/api-mozilla.key || die
+
+	xdg_environment_reset
+}
+
+src_configure() {
+	# Show flags set at the beginning
+	einfo "Current BINDGEN_CFLAGS:\t${BINDGEN_CFLAGS:-no value set}"
+	einfo "Current CFLAGS:\t\t${CFLAGS:-no value set}"
+	einfo "Current CXXFLAGS:\t\t${CXXFLAGS:-no value set}"
+	einfo "Current LDFLAGS:\t\t${LDFLAGS:-no value set}"
+	einfo "Current RUSTFLAGS:\t\t${RUSTFLAGS:-no value set}"
+
+	local have_switched_compiler=
+	if use clang; then
+		# Force clang
+		einfo "Enforcing the use of clang due to USE=clang ..."
+
+		local version_clang=$(clang --version 2>/dev/null | grep -F -- 'clang version' | awk '{ print $3 }')
+		[[ -n ${version_clang} ]] && version_clang=$(ver_cut 1 "${version_clang}")
+		[[ -z ${version_clang} ]] && die "Failed to read clang version!"
+
+		if tc-is-gcc; then
+			have_switched_compiler=yes
+		fi
+
+		AR=llvm-ar
+		CC=${CHOST}-clang-${version_clang}
+		CXX=${CHOST}-clang++-${version_clang}
+		NM=llvm-nm
+		RANLIB=llvm-ranlib
+	elif ! use clang && ! tc-is-gcc ; then
+		# Force gcc
+		have_switched_compiler=yes
+		einfo "Enforcing the use of gcc due to USE=-clang ..."
+		AR=gcc-ar
+		CC=${CHOST}-gcc
+		CXX=${CHOST}-g++
+		NM=gcc-nm
+		RANLIB=gcc-ranlib
+	fi
+
+	if [[ -n "${have_switched_compiler}" ]] ; then
+		# Because we switched active compiler we have to ensure
+		# that no unsupported flags are set
+		strip-unsupported-flags
+	fi
+
+	# Ensure we use correct toolchain,
+	# AS is used in a non-standard way by upstream, #bmo1654031
+	export HOST_CC="$(tc-getBUILD_CC)"
+	export HOST_CXX="$(tc-getBUILD_CXX)"
+	export AS="$(tc-getCC) -c"
+
+	# Configuration tests expect llvm-readelf output, bug 913130
+	READELF="llvm-readelf"
+
+	tc-export CC CXX LD AR AS NM OBJDUMP RANLIB READELF PKG_CONFIG
+
+	# Pass the correct toolchain paths through cbindgen
+	if tc-is-cross-compiler ; then
+		export BINDGEN_CFLAGS="${SYSROOT:+--sysroot=${ESYSROOT}} --target=${CHOST} ${BINDGEN_CFLAGS-}"
+	fi
+
+	# Set MOZILLA_FIVE_HOME
+	export MOZILLA_FIVE_HOME="/usr/$(get_libdir)/${PN}"
+
+	# python/mach/mach/mixin/process.py fails to detect SHELL
+	export SHELL="${EPREFIX}/bin/bash"
+
+	# Set state path
+	export MOZBUILD_STATE_PATH="${BUILD_DIR}"
+
+	# Set MOZCONFIG
+	export MOZCONFIG="${S}/.mozconfig"
+
+	# Initialize MOZCONFIG
+	mozconfig_add_options_ac '' --enable-application=comm/mail
+	mozconfig_add_options_ac '' --enable-project=comm/mail
+
+	# Set Gentoo defaults
+	mozconfig_add_options_ac 'Gentoo default' \
+		--allow-addon-sideload \
+		--disable-cargo-incremental \
+		--disable-crashreporter \
+		--disable-disk-remnant-avoidance \
+		--disable-geckodriver \
+		--disable-install-strip \
+		--disable-legacy-profile-creation \
+		--disable-parental-controls \
+		--disable-strip \
+		--disable-tests \
+		--disable-updater \
+		--disable-valgrind \
+		--disable-wmf \
+		--enable-dbus \
+		--enable-js-shell \
+		--enable-negotiateauth \
+		--enable-new-pass-manager \
+		--enable-official-branding \
+		--enable-packed-relative-relocs \
+		--enable-release \
+		--enable-system-policies \
+		--host="${CBUILD:-${CHOST}}" \
+		--libdir="${EPREFIX}/usr/$(get_libdir)" \
+		--prefix="${EPREFIX}/usr" \
+		--target="${CHOST}" \
+		--without-ccache \
+		--without-wasm-sandboxed-libraries \
+		--with-intl-api \
+		--with-libclang-path="$(llvm-config --libdir)" \
+		--with-system-ffi \
+		--with-system-gbm \
+		--with-system-libdrm \
+		--with-system-nspr \
+		--with-system-nss \
+		--with-system-pixman \
+		--with-system-zlib \
+		--with-toolchain-prefix="${CHOST}-" \
+		--with-unsigned-addon-scopes=app,system
+
+	# Set update channel
+	local update_channel=release
+	[[ -n ${MOZ_ESR} ]] && update_channel=esr
+	mozconfig_add_options_ac '' --enable-update-channel=${update_channel}
+
+	# Whitelist to allow unkeyworded arches to build with "--disable-rust-simd" by default.
+	if use amd64 || use arm64 || use loong ; then
+		mozconfig_add_options_ac '' --enable-rust-simd
+	fi
+
+	# For future keywording: This is currently (97.0) only supported on:
+	# amd64, arm, arm64 & x86.
+	# Might want to flip the logic around if Firefox is to support more arches.
+	# bug 833001, bug 903411#c8
+	if use loong || use ppc64 || use riscv; then
+		mozconfig_add_options_ac '' --disable-sandbox
+	else
+		mozconfig_add_options_ac '' --enable-sandbox
+	fi
+
+	# riscv-related options, bgo#947337, bgo#947338
+	if use riscv ; then
+		mozconfig_add_options_ac 'Disable JIT for RISC-V 64' --disable-jit
+		mozconfig_add_options_ac 'Disable webrtc for RISC-V' --disable-webrtc
+	fi
+
+	if [[ -s "${S}/api-google.key" ]] ; then
+		local key_origin="Gentoo default"
+		if [[ $(cat "${S}/api-google.key" | md5sum | awk '{ print $1 }') != 709560c02f94b41f9ad2c49207be6c54 ]] ; then
+			key_origin="User value"
+		fi
+
+		mozconfig_add_options_ac "${key_origin}" \
+			--with-google-safebrowsing-api-keyfile="${S}/api-google.key"
+	else
+		einfo "Building without Google API key ..."
+	fi
+
+	if [[ -s "${S}/api-location.key" ]] ; then
+		local key_origin="Gentoo default"
+		if [[ $(cat "${S}/api-location.key" | md5sum | awk '{ print $1 }') != ffb7895e35dedf832eb1c5d420ac7420 ]] ; then
+			key_origin="User value"
+		fi
+
+		mozconfig_add_options_ac "${key_origin}" \
+			--with-google-location-service-api-keyfile="${S}/api-location.key"
+	else
+		einfo "Building without Location API key ..."
+	fi
+
+	if [[ -s "${S}/api-mozilla.key" ]] ; then
+		local key_origin="Gentoo default"
+		if [[ $(cat "${S}/api-mozilla.key" | md5sum | awk '{ print $1 }') != 3927726e9442a8e8fa0e46ccc39caa27 ]] ; then
+			key_origin="User value"
+		fi
+
+		mozconfig_add_options_ac "${key_origin}" \
+			--with-mozilla-api-keyfile="${S}/api-mozilla.key"
+	else
+		einfo "Building without Mozilla API key ..."
+	fi
+
+	mozconfig_use_with system-av1
+	mozconfig_use_with system-harfbuzz
+	mozconfig_use_with system-harfbuzz system-graphite2
+	mozconfig_use_with system-icu
+	mozconfig_use_with system-jpeg
+	mozconfig_use_with system-libevent
+	mozconfig_use_with system-libvpx
+	mozconfig_use_with system-pipewire
+	mozconfig_use_with system-png
+	mozconfig_use_with system-webp
+
+	if use system-librnp; then
+		mozconfig_add_options_ac "+system-librnp" --enable-compile-environment
+		mozconfig_use_with system-librnp
+	else
+		# This controls the backend of the bundled librnp. Choices are "botan" and "openssl".
+		# RNP Upstream recommends to use botan. In Gentoo it's preferred to use system-librnp.
+		mozconfig_add_options_ac "+bundled librnp backend = botan" --with-librnp-backend="botan"
+	fi
+
+	mozconfig_use_enable libproxy
+
+	use eme-free && mozconfig_add_options_ac '+eme-free' --disable-eme
+
+	if use hardened ; then
+		mozconfig_add_options_ac "+hardened" --enable-hardening
+		# mozconfig_add_options_ac "+hardened stl" --enable-stl-hardening # not available in TB
+		append-ldflags "-Wl,-z,relro -Wl,-z,now"
+
+		# Increase the FORTIFY_SOURCE value, #910071.
+		sed -i -e '/-D_FORTIFY_SOURCE=/s:2:3:' "${S}"/build/moz.configure/toolchain.configure || die
+	fi
+
+	local myaudiobackends=""
+	use jack && myaudiobackends+="jack,"
+	use sndio && myaudiobackends+="sndio,"
+	use pulseaudio && myaudiobackends+="pulseaudio,"
+	! use pulseaudio && myaudiobackends+="alsa,"
+
+	mozconfig_add_options_ac '--enable-audio-backends' --enable-audio-backends="${myaudiobackends::-1}"
+
+	mozconfig_use_enable wifi necko-wifi
+
+	if use X && use wayland ; then
+		mozconfig_add_options_ac '+x11+wayland' --enable-default-toolkit=cairo-gtk3-x11-wayland
+	elif ! use X && use wayland ; then
+		mozconfig_add_options_ac '+wayland' --enable-default-toolkit=cairo-gtk3-wayland-only
+	else
+		mozconfig_add_options_ac '+x11' --enable-default-toolkit=cairo-gtk3-x11-only
+	fi
+
+	if [[ ${use_lto} == "yes" ]] ; then
+		if use clang ; then
+			# Upstream only supports lld or mold when using clang.
+			if tc-ld-is-mold ; then
+				# mold expects the -flto line from *FLAGS configuration, bgo#923119
+				append-ldflags "-flto=thin"
+				mozconfig_add_options_ac "using ld=mold due to system selection" --enable-linker=mold
+			else
+				mozconfig_add_options_ac "forcing ld=lld due to USE=clang and USE=lto" --enable-linker=lld
+			fi
+
+			mozconfig_add_options_ac '+lto' --enable-lto=cross
+
+		else
+			# ThinLTO is currently broken, see bmo#1644409.
+			# mold does not support gcc+lto combination.
+			mozconfig_add_options_ac '+lto' --enable-lto=full
+			mozconfig_add_options_ac "linker is set to bfd" --enable-linker=bfd
+		fi
+
+	else
+		# Avoid auto-magic on linker
+		if use clang ; then
+			# lld is upstream's default
+			if tc-ld-is-mold ; then
+				mozconfig_add_options_ac "using ld=mold due to system selection" --enable-linker=mold
+			else
+				mozconfig_add_options_ac "forcing ld=lld due to USE=clang" --enable-linker=lld
+			fi
+
+		else
+			if tc-ld-is-mold ; then
+				mozconfig_add_options_ac "using ld=mold due to system selection" --enable-linker=mold
+			else
+				mozconfig_add_options_ac "linker is set to bfd due to USE=-clang" --enable-linker=bfd
+			fi
+		fi
+	fi
+
+	if use pgo ; then
+		mozconfig_add_options_ac '+pgo' MOZ_PGO=1
+
+		if use clang ; then
+			# Used in build/pgo/profileserver.py
+			export LLVM_PROFDATA="llvm-profdata"
+		fi
+	fi
+
+	mozconfig_use_enable debug
+	if use debug ; then
+		mozconfig_add_options_ac '+debug' --disable-optimize
+		mozconfig_add_options_ac '+debug' --enable-jemalloc
+		mozconfig_add_options_ac '+debug' --enable-real-time-tracing
+	else
+		mozconfig_add_options_ac 'Gentoo defaults' --disable-real-time-tracing
+
+		if is-flag '-g*' ; then
+			if use clang ; then
+				mozconfig_add_options_ac 'from CFLAGS' --enable-debug-symbols=$(get-flag '-g*')
+			else
+				mozconfig_add_options_ac 'from CFLAGS' --enable-debug-symbols
+			fi
+		else
+			mozconfig_add_options_ac 'Gentoo default' --disable-debug-symbols
+		fi
+
+		if is-flag '-O0' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O0
+		elif is-flag '-O4' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O4
+		elif is-flag '-O3' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O3
+		elif is-flag '-O1' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O1
+		elif is-flag '-Os' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-Os
+		else
+			mozconfig_add_options_ac "Gentoo default" --enable-optimize=-O2
+		fi
+	fi
+
+	# Debug flag was handled via configure
+	filter-flags '-g*'
+
+	# Optimization flag was handled via configure
+	filter-flags '-O*'
+
+	# elf-hack
+	# Filter "-z,pack-relative-relocs" and let the build system handle it instead.
+	if use amd64 || use x86 ; then
+		filter-flags "-z,pack-relative-relocs"
+
+		if tc-ld-is-mold ; then
+			# relr-elf-hack is currently broken with mold, bgo#916259
+			mozconfig_add_options_ac 'disable elf-hack with mold linker' --disable-elf-hack
+		else
+			mozconfig_add_options_ac 'relr elf-hack' --enable-elf-hack=relr
+		fi
+	elif use loong || use ppc64 || use riscv ; then
+		# '--disable-elf-hack' is not recognized on loong/ppc64/riscv,
+		# see bgo #917049, #930046
+		:;
+	else
+		mozconfig_add_options_ac 'disable elf-hack on non-supported arches' --disable-elf-hack
+	fi
+
+	if ! use elibc_glibc; then
+		mozconfig_add_options_ac '!elibc_glibc' --disable-jemalloc
+	fi
+
+	# System-av1 fix
+	use system-av1 && append-ldflags "-Wl,--undefined-version"
+
+	# Make revdep-rebuild.sh happy; Also required for musl
+	append-ldflags -Wl,-rpath="${MOZILLA_FIVE_HOME}",--enable-new-dtags
+
+	# Pass $MAKEOPTS to build system
+	export MOZ_MAKE_FLAGS="${MAKEOPTS}"
+
+	# Use system's Python environment
+	export PIP_NETWORK_INSTALL_RESTRICTED_VIRTUALENVS=mach
+
+	export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE="none"
+
+	# Disable notification when build system has finished
+	export MOZ_NOSPAM=1
+
+	# Portage sets XARGS environment variable to "xargs -r" by default which
+	# breaks build system's check_prog() function which doesn't support arguments
+	mozconfig_add_options_ac 'Gentoo default' "XARGS=${EPREFIX}/usr/bin/xargs"
+
+	# Set build dir
+	mozconfig_add_options_mk 'Gentoo default' "MOZ_OBJDIR=${BUILD_DIR}"
+
+	# Show flags we will use
+	einfo "Build BINDGEN_CFLAGS:\t${BINDGEN_CFLAGS:-no value set}"
+	einfo "Build CFLAGS:\t\t${CFLAGS:-no value set}"
+	einfo "Build CXXFLAGS:\t\t${CXXFLAGS:-no value set}"
+	einfo "Build LDFLAGS:\t\t${LDFLAGS:-no value set}"
+	einfo "Build RUSTFLAGS:\t\t${RUSTFLAGS:-no value set}"
+
+	# Handle EXTRA_CONF and show summary
+	local ac opt hash reason
+
+	# Apply EXTRA_ECONF entries to $MOZCONFIG
+	if [[ -n ${EXTRA_ECONF} ]] ; then
+		IFS=\! read -a ac <<<${EXTRA_ECONF// --/\!}
+		for opt in "${ac[@]}"; do
+			mozconfig_add_options_ac "EXTRA_ECONF" --${opt#--}
+		done
+	fi
+
+	echo
+	echo "=========================================================="
+	echo "Building ${PF} with the following configuration"
+	grep ^ac_add_options "${MOZCONFIG}" | while read ac opt hash reason; do
+		[[ -z ${hash} || ${hash} == \# ]] \
+			|| die "error reading mozconfig: ${ac} ${opt} ${hash} ${reason}"
+		printf "    %-30s  %s\n" "${opt}" "${reason:-mozilla.org default}"
+	done
+	echo "=========================================================="
+	echo
+
+	./mach configure || die
+}
+
+src_compile() {
+	local virtx_cmd=
+
+	if [[ ${use_lto} == "yes" ]] && tc-ld-is-mold ; then
+		# increase ulimit with mold+lto, bugs #892641, #907485
+		if ! ulimit -n 16384 1>/dev/null 2>&1 ; then
+			ewarn "Unable to modify ulimits - building with mold+lto might fail due to low ulimit -n resources."
+			ewarn "Please see bugs #892641 & #907485."
+		else
+			ulimit -n 16384
+		fi
+	fi
+
+	if use pgo; then
+		# Reset and cleanup environment variables used by GNOME/XDG
+		gnome2_environment_reset
+
+		addpredict /root
+
+		if ! use X; then
+			virtx_cmd=virtwl
+		else
+			virtx_cmd=virtx
+		fi
+	fi
+
+	if ! use X; then
+		local -x GDK_BACKEND=wayland
+	else
+		local -x GDK_BACKEND=x11
+	fi
+
+	${virtx_cmd} ./mach build --verbose || die
+}
+
+src_install() {
+	# xpcshell is getting called during install
+	pax-mark m \
+		"${BUILD_DIR}"/dist/bin/xpcshell \
+		"${BUILD_DIR}"/dist/bin/${PN} \
+		"${BUILD_DIR}"/dist/bin/plugin-container
+
+	DESTDIR="${D}" ./mach install || die
+
+	# Upstream cannot ship symlink but we can (bmo#658850)
+	rm "${ED}${MOZILLA_FIVE_HOME}/${PN}-bin" || die
+	dosym ${PN} ${MOZILLA_FIVE_HOME}/${PN}-bin
+
+	# Don't install llvm-symbolizer from llvm-core/llvm package
+	if [[ -f "${ED}${MOZILLA_FIVE_HOME}/llvm-symbolizer" ]] ; then
+		rm -v "${ED}${MOZILLA_FIVE_HOME}/llvm-symbolizer" || die
+	fi
+
+	# Install policy (currently only used to disable application updates)
+	insinto "${MOZILLA_FIVE_HOME}/distribution"
+	newins "${FILESDIR}"/distribution.ini distribution.ini
+	newins "${FILESDIR}"/disable-auto-update.policy.json policies.json
+
+	# Install system-wide preferences
+	local PREFS_DIR="${MOZILLA_FIVE_HOME}/defaults/pref"
+	insinto "${PREFS_DIR}"
+	newins "${FILESDIR}"/gentoo-default-prefs-r1.js gentoo-prefs.js
+
+	local GENTOO_PREFS="${ED}${PREFS_DIR}/gentoo-prefs.js"
+
+	# Force hwaccel prefs if USE=hwaccel is enabled
+	if use hwaccel ; then
+		cat "${FILESDIR}"/gentoo-hwaccel-prefs.js \
+		>>"${GENTOO_PREFS}" \
+		|| die "failed to add prefs to force hardware-accelerated rendering to all-gentoo.js"
+
+		if use wayland; then
+			cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set hwaccel wayland prefs"
+			pref("gfx.x11-egl.force-enabled",          false);
+			EOF
+		else
+			cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set hwaccel x11 prefs"
+			pref("gfx.x11-egl.force-enabled",          true);
+			EOF
+		fi
+	fi
+
+	# Set dictionary path to use system hunspell
+	cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set spellchecker.dictionary_path pref"
+	pref("spellchecker.dictionary_path",       "${EPREFIX}/usr/share/myspell");
+	EOF
+
+	# Force the graphite pref if USE=system-harfbuzz is enabled, since the pref cannot disable it
+	if use system-harfbuzz ; then
+		cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set gfx.font_rendering.graphite.enabled pref"
+		sticky_pref("gfx.font_rendering.graphite.enabled", true);
+		EOF
+	fi
+
+	# Install language packs
+	local langpacks=( $(find "${WORKDIR}/language_packs" -type f -name '*.xpi') )
+	if [[ -n "${langpacks}" ]] ; then
+		moz_install_xpi "${MOZILLA_FIVE_HOME}/distribution/extensions" "${langpacks[@]}"
+	fi
+
+	# Install icons
+	local icon_srcdir="${S}/comm/mail/branding/thunderbird"
+	local icon_symbolic_file="${icon_srcdir}/TB-symbolic.svg"
+
+	insinto /usr/share/icons/hicolor/symbolic/apps
+	newins "${icon_symbolic_file}" ${PN}-symbolic.svg
+
+	local icon size
+	for icon in "${icon_srcdir}"/default*.png ; do
+		size=${icon%.png}
+		size=${size##*/default}
+
+		if [[ ${size} -eq 48 ]] ; then
+			newicon "${icon}" ${PN}.png
+		fi
+
+		newicon -s ${size} "${icon}" ${PN}.png
+	done
+
+	# Install menu
+	local app_name="Mozilla ${MOZ_PN^}"
+	local desktop_file="${FILESDIR}/icon/${PN}-r2.desktop"
+	local exec_command="${PN}"
+	local icon="${PN}"
+	local use_wayland="false"
+
+	if [[ -n ${MOZ_ESR} ]] ; then
+		local desktop_filename="${PN}-esr.desktop"
+	else
+		local desktop_filename="${PN}.desktop"
+	fi
+
+	if use wayland ; then
+		use_wayland="true"
+	fi
+
+	cp "${desktop_file}" "${WORKDIR}/${PN}.desktop-template" || die
+
+	sed -i \
+		-e "s:@NAME@:${app_name}:" \
+		-e "s:@EXEC@:${exec_command}:" \
+		-e "s:@ICON@:${icon}:" \
+		"${WORKDIR}/${PN}.desktop-template" || die
+
+	newmenu "${WORKDIR}/${PN}.desktop-template" "${desktop_filename}"
+
+	rm "${WORKDIR}/${PN}.desktop-template" || die
+
+	# Install wrapper script
+	[[ -f "${ED}/usr/bin/${PN}" ]] && rm "${ED}/usr/bin/${PN}"
+	newbin "${FILESDIR}/${PN}-r1.sh" ${PN}
+
+	# Update wrapper
+	sed -i \
+		-e "s:@PREFIX@:${EPREFIX}/usr:" \
+		-e "s:@DEFAULT_WAYLAND@:${use_wayland}:" \
+		"${ED}/usr/bin/${PN}" || die
+}
+
+pkg_postinst() {
+	xdg_pkg_postinst
+
+	if ver_replacing -lt 136.0 ; then
+		elog "In this version of Thunderbird, upstream introduced an in-app notification"
+		elog "system. Setting pref 'mail.inappnotifications.enabled' to false and nullifying"
+		elog "'mail.inappnotifications.url' may help you avoid these messages, if you don't"
+		elog "wish to receive them."
+	fi
+
+	optfeature_header "Optional programs for extra features:"
+	optfeature "desktop notifications" x11-libs/libnotify
+	optfeature "encrypted chat support" net-libs/libotr
+	optfeature "fallback mouse cursor theme e.g. on WMs" gnome-base/gsettings-desktop-schemas
+}