This adds a test to check that a commit like 0a3dab4af3 would fail CI
After doing some improvements to the `pkgs/by-name` check I discovered
that sbcl shouldn't have been allowed in `pkgs/by-name` after all as is.
Specifically, the requirement is that if `pkgs/by-name/sb/sbcl` exists,
the definition of the `sbcl` attribute must look like
sbcl = callPackage ../by-name/sb/sbcl/package.nix { ... };
However it currently is an alias like
sbcl = sbcl_2_4_1;
This wasn't detected before because `sbcl_2_4_1` was semantically
defined using `callPackage`:
sbcl_2_4_1 = wrapLisp {
pkg = callPackage ../development/compilers/sbcl { version = "2.4.1"; };
faslExt = "fasl";
flags = [ "--dynamic-space-size" "3000" ];
};
However this doesn't syntactically match what is required.
In https://github.com/NixOS/nixpkgs/pull/285089 I introduced syntactic
checks for exactly this, but they were only used for packages not
already in `pkgs/by-name`.
Only now that I'm doing the refactoring to also use this check for
`pkgs/by-name` packages this problem is noticed.
While introducing this new check is technically an increase in
strictness, and therefore would justify adding a new ratchet, I consider
this case to be rare enough that we don't need to do that.
This commit introduces a test to prevent such regressions in the
future
Moving sbcl back out of `pkgs/by-name` will be done when the pinned CI is updated
- Detect manual use of _internalCallByNamePackageFile for packages in
`pkgs/by-name` (can't be done for others though)
- Separate error message for when attribute locations can't be
determined for `pkgs/by-name` attributes
- Much better structure of the code in eval.rs, representing more
closely what is being checked
- Much more extensive comments
Without the change `wxSVG` fails the build in `master` as
https://hydra.nixos.org/build/248172755:
libwx_gtk3u_xrc-3.2.so: undefined reference to `std::ios_base_library_init()@GLIBCXX_3.4.32'
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:416: svgview] Error 1
This happens due to mix of `gcc-12` / `gcc-13` `libstdc++` libraries.
THe fix just applies upstream fix for `wxSVG` for `gcc-13`.
