{gcc9,gcc10,gcc11,gcc12}: drop by emilazy · Pull Request #435019 · NixOS/nixpkgs

emilazy · 2025-08-19T14:37:05Z

These compilers have reached end‐of‐life upstream, require patching, derivation complexity, and maintenance burden (latest example: #432060) to keep working, and after #434139, #434553, and #434827, the handful of packages here are the only ones remaining that still require these unmaintained compilers and that I could not get to build with newer ones.

I expect current versions of ArangoDB can probably build with more recent compilers, if someone picks up maintenance for the package. ~~The three games using GDC could be restored if someone works out a bootstrapping story for GDC or gets them to build with another D compiler, as detailed in the commit messages.~~ Obliv‐C and COLLADA2GLTF would require patching work that wasn’t obvious to me within an hour or so’s timebox, or their upstreams to become active again. The hardened Linux 5.4 kernel was already broken. See the commit messages for more detail.

This needs #434827 to be merged first to pass eval, but opening this up for review now.

Pinging maintainers of dropped packages:

arangodb – @flosse (already discussed with jsoo1 in arangodb_3_10: init at 3.10.5.2 #255012 (comment))
collada2gltf – @ShaddyDC
obliv-c – @7c6f434c
~~{titanion,torus-trooper,tumiki-fighters} – @fgaz~~ Saved!

cc @trofi @wolfgangwalther

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pkgs/top-level/aliases.nix

wolfgangwalther · 2025-08-19T14:56:52Z

pkgs/top-level/python-packages.nix

What's the intent of commenting this out here?

This is the TensorFlow source build, which is no longer used as the default TensorFlow package since #345658, and is marked broken in 3d249fe.

However, the package is a significant effort with extensive domain knowledge for building TensorFlow with Nix, and there are WIP pull requests updating it to newer versions of TensorFlow that don’t require all these EOL dependencies. I have opted to leave it in‐tree marked broken in the hopes that it can be revived, commenting out old dependency pins that get removed so the next person to come along to update it can see where they were required. Hopefully, at some point an update will land and we can make it the default again. Commenting out more of it preemptively would be an option, but I opted for the minimal solution. python3Packages.protobuf4 is the only non‐override pin it still has left after these changes, and it seems like pulumi and ola reference that one too.

ShaddyDC · 2025-08-19T14:58:54Z

Thanks for making the attempt to get collada2gltf to work! I tried to devendor it as well back when I packaged it, but it was a pain. I don't use it anymore, and I don't think I'll be looking into that again, so dropping is fine, even if it's a shame. Thanks for the headsup too!

7c6f434c · 2025-08-19T15:14:24Z

Obliv-C had goals that are cool but somewhat cursed, so now that its falling behind the gcc updates causes an actual problem, it's good time to drop. Thanks!

trofi · 2025-08-19T20:13:30Z

eval is a bit sad aroubd bazel_5, otherwise the changes' intent is great \o/:

       >        … while calling anonymous lambda
       >          at /nix/store/waspkqpk8n52s1kff60a7myr89sgnrgb-source/pkgs/development/tools/build-managers/bazel/bazel_5/default.nix:1:1:
       >             1| {
       >              | ^
       >             2|   stdenv,
       >
       >        error: undefined variable 'gcc12Stdenv'

emilazy · 2025-08-19T20:21:58Z

Yeah, the Bazel/CUDA stuff is handled in #434827.

K900

Yes please.

wolfgangwalther · 2025-08-20T06:41:43Z

Also fails treefmt, which is unrelated to Eval / the other PR.

pkgs/top-level/aliases.nix

GDC is going to be dropped in NixOS#435019. I used LDC instead of DMD because it claims better platform support and faster binaries.

This requires an EOL GCC to build. The version is over two years old; the latest version is 3.12.5.2. The listed package maintainer [no longer uses the package]. If another version is packaged that builds with a supported compiler, this can be re‐added; per the [request from 2023] to restore versioned suffixes, it should likely not be upgraded in place anyway, to avoid unexpected data migrations. [no longer uses the package]: <NixOS#255012 (comment)> [request from 2023]: <NixOS#254866>

Already marked as broken, and due for removal anyway in <NixOS#432561>.

Vendors outdated dependencies that don’t build with supported compilers. I tried my best to devendor, but I was unable to get it building, and upstream has not been active in half a decade.

Broken on supported compilers when parsing system headers, with no obvious‐to-me fix from a quick search of the codebase; see <samee/obliv-c#110>. No upstream activity since 2021.

EOL since 2022; no longer used in the tree.

EOL since 2023; no longer used in the tree.

GDC 11 was the last version that could bootstrap without a D compiler, and GDC don’t offer their own binaries any more. GCC 11 is now end‐of‐life and being removed (as is GCC 12, even). It’s possible that we could use another distribution’s binary packages to bootstrap this, or go via our DMD package (it’s apparently not possible to bootstrap GDC with LDC, but I’m not sure about DMD), but as nobody has worked on it in the three years since GCC 12 came out, it seems like interest is limited, and it’s more of a yak shave than I’m up for right now. A full from‐source bootstrap chain would of course be nice, but is more the realm of the minimal bootstrap work than something we’d want to keep GCC 11 around in the main package set indefinitely for.

EOL since 2024; no longer used in the tree.

According to the comment on the `gnat` definition, this should have happened already.

EOL as of July; no longer used in the tree.

emilazy · 2025-08-22T22:09:58Z

This is now ready 🎉

emilazy requested a review from wolfgangwalther August 19, 2025 14:37

nix-owners bot requested review from Ericson2314, K900, Ma27, NeQuissimus, TredwellGit, alyssais and natsukium August 19, 2025 14:38

emilazy force-pushed the push-uwmzmvxupmwp branch from c25c380 to 998bd3a Compare August 19, 2025 14:40

emilazy mentioned this pull request Aug 19, 2025

cudaPackages_{11,12_0,12_1,12_2,12_3,12_4,12_5}: drop #434827

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wolfgangwalther reviewed Aug 19, 2025

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emilazy force-pushed the push-uwmzmvxupmwp branch from 998bd3a to 3c0176c Compare August 19, 2025 15:21

trofi approved these changes Aug 19, 2025

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nixpkgs-ci bot added the 12.approvals: 1 This PR was reviewed and approved by one person. label Aug 19, 2025

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fgaz reviewed Aug 20, 2025

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pkgs/top-level/aliases.nix Outdated Show resolved Hide resolved

fgaz added a commit to fgaz/nixpkgs that referenced this pull request Aug 20, 2025

{titanion,torus-trooper,tumiki-fighters}: use LDC

8983a98

GDC is going to be dropped in NixOS#435019. I used LDC instead of DMD because it claims better platform support and faster binaries.

fgaz mentioned this pull request Aug 20, 2025

{titanion,torus-trooper,tumiki-fighters}: use LDC #435252

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emilazy force-pushed the push-uwmzmvxupmwp branch 2 times, most recently from 42da3ff to 2fef83d Compare August 22, 2025 21:55

emilazy added 2 commits August 22, 2025 23:01

linux_5_4_hardened: drop

796e4f5

Already marked as broken, and due for removal anyway in <NixOS#432561>.

emilazy added 10 commits August 22, 2025 23:01

collada2gltf: drop

ecba8f4

Vendors outdated dependencies that don’t build with supported compilers. I tried my best to devendor, but I was unable to get it building, and upstream has not been active in half a decade.

obliv-c: drop

892ebc4

Broken on supported compilers when parsing system headers, with no obvious‐to-me fix from a quick search of the codebase; see <samee/obliv-c#110>. No upstream activity since 2021.

gcc: clean up unused patches

b8f75c8

{gcc9,gfortran9}: drop

2a196a7

EOL since 2022; no longer used in the tree.

{gcc10,gfortran10}: drop

4e7ee62

EOL since 2023; no longer used in the tree.

cc-wrapper: remove dead code for langJava

5376784

{gcc11,gfortran11,gdc11,gnat11,gnat-bootstrap11}: drop

10ce2b4

EOL since 2024; no longer used in the tree.

gnat-bootstrap: gnat-bootstrap12 -> gnat-bootstrap13

1101f10

According to the comment on the `gnat` definition, this should have happened already.

{gcc12,gfortran12,gccgo12,gnat12,gnat-bootstrap12}: drop

f3186c5

EOL as of July; no longer used in the tree.

emilazy force-pushed the push-uwmzmvxupmwp branch from 2fef83d to f3186c5 Compare August 22, 2025 22:02

nix-owners bot requested a review from marler8997 August 22, 2025 22:09

reckenrode merged commit c84fc63 into NixOS:master Aug 23, 2025
28 checks passed

emilazy deleted the push-uwmzmvxupmwp branch August 23, 2025 02:39

emilazy mentioned this pull request Sep 4, 2025

llvmPackages_{12,13,14,15,16,17}: drop #440273

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quantenzitrone mentioned this pull request Sep 10, 2025

broken on nixpkgs since 4e7ee62b94d962a4ca28b5730bae0319598beb70 jtojnar/nixpkgs-hammering#175

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{gcc9,gcc10,gcc11,gcc12}: drop#435019

{gcc9,gcc10,gcc11,gcc12}: drop#435019
reckenrode merged 12 commits intoNixOS:masterfrom
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