| 26 Apr 2025 |
 sterni (he/him) | but it may be possible, not sure. | 11:38:32 |
 aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | I can also let loongson guys to compile an ideal binary tarball if it really doesn't work | 11:39:58 |
 emily | we don't put anything not built by Hydra on tarballs.nixos.org | 12:01:20 |
| emily | I guess just fetchurling something wouldn't be the end of the world though, we already have some mystery-meat third-party binaries in tree… | 12:01:38 |
| emily | but we'd really prefer to avoid it if at all possible of course | 12:01:53 |
| emily | binaries from Hydra >> binaries from upstream >>> all other binaries | 12:02:16 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | => nix-build -A pkgsCross.loongarch64-linux.haskell.packages.ghc984.ghc
evaluation warning: build: x86_64-linux host: x86_64-linux target: loongarch64-linux
this derivation will be built:
/nix/store/dpwqr9489b1mkgmili5fpxci31if3n2a-loongarch64-unknown-linux-gnu-ghc-9.8.4.drv
Well | 12:49:15 |
| emily | huh. host should be loongarch64-linux unless you use buildPackages? | 12:50:47 |
| emily | splicing issue maybe? | 12:51:02 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | In reply to @emilazy:matrix.org
splicing issue maybe? Very likely | 12:51:29 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | Because the attribute is referenced from buildPackages: https://github.com/NixOS/nixpkgs/blob/master/pkgs/top-level/haskell-packages.nix#L482 | 13:04:18 |
| sterni (he/him) | haskell.packages.*.ghc is like stdenv.cc | 13:04:56 |
| sterni (he/him) | haskell.compiler.* would be cross compiled | 13:05:10 |
| emily | hm, wouldn't it make more sense to use buildPackages explicitly for that? | 13:08:49 |
| emily | I assume that pkgsCross.foo.* is going to have host foo unless * starts with buildPackages. (with stdenv as an unfortunate exception) | 13:09:20 |
| emily | I guess there are probably other unfortunate exceptions already though. | 13:09:31 |
| emily | WTB universe without the GNU idea of cross… | 13:10:01 |
| sterni (he/him) | as said, it’s like stdenv with all the weirdness involved, this is probably the best way to do it. You can’t even do an equivalent of libc/cc split | 13:26:18 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | I think I'm on the right track now. The performance impact of enableUnregisterised is really huge | 14:36:42 |
|  Mr Mayhem changed their display name from Magnolia Mayhem to Magnolia Mayhem: Rallycar Mailman. | 14:40:29 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | @sterni I now get to the same point you got in https://gitlab.haskell.org/ghc/ghc/-/issues/22006 now | 15:37:01 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | The log says "Run Ghc CompileHs Stage1" but the resulting ghc is stage0 | 15:38:16 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | But if, say, I put this ghc into the derivation again, it would start complaining about hostPlatform != buildPlatform | 15:39:17 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | Like they said in https://gitlab.haskell.org/ghc/ghc/-/issues/22006#note_448234 and https://gitlab.haskell.org/ghc/ghc/-/wikis/building/cross-compiling#terminology-and-background | 15:40:55 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | "build must equal host" | 15:41:06 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | But someone wrote here https://bbs.loongarch.org/d/150-ghc-loongarch that they did cross compile to loongarch64 2 years ago with ghc 9.6 and they just used --target=loongarch64-unknown-linux-gnu and hadrian/build, nothing special | 15:43:43 |
 Alex | Make used nonstandard cross terminology and the configure script was designed to match.
Hadrian fixed that confused terminology, but the configure script was never updated to match. | 16:00:37 |
| 27 Apr 2025 |
| sterni (he/him) | What makes you say that? stage0 is passed in (i.e. the bootstrap compiler), so you can't really get it out. | 09:38:10 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | In reply to @sternenseemann:systemli.org
What makes you say that? stage0 is passed in (i.e. the bootstrap compiler), so you can't really get it out. The resulting binary is x86_64-x86_64-loong64，instead of x86_64-loong64-loong64 | 09:39:26 |
| aleksana 🏳️⚧️ (force me to bed after 18:00 UTC) | build-host-target | 09:39:36 |
