pin current versions too in names of language related packages - Githubissues

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pin current versions too in names of language related packages #344160

Open goyalyashpal opened 2 months ago

goyalyashpal commented 2 months ago

Title:

pin versions of current versions of language related packages too

Issue description

Currently:

there is no llvmPackages_18 in nix-pkgs
the llvmPackages (i.e. no suffix) provides the 18th version, i.e. the "CURRENT Stable"
the suffixed versions are either llvmPackages_19 (rc), or llvmPackage_17 (older)
similarly, there's no python312, rather only python3 (implicitly 312), or python313 (rc), or python311 (older), or python312Full

but:

this is a problem for someone who wants to explicitly specify the 18th version, regardless of its "CURRENT" status.
as now, they have to manually track the nix-pkgs, and change it tomorrow when the 19th version becomes the new current stable.

also for example,

this situation is correct as expected for the gcc package, where there are both: the latest stable (whichever it is), and the pinned current stable
that is, is gcc13 explicitly providing the 13th version,
and also the gcc which provides current version (also 13th)
so, it covers both situations - the moving target current stable (implicit) as well as explicitly pinned to the version which is in use at immediate current moment.

Steps to reproduce

try to search for current pinned version of language compiler/interpreter/runner etc for various langs.
shown/shared above is for c/c++ with llvm implementation, and cpython implementation of python

Technical details

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 6.6.51, NixOS, 24.11 (Vicuna), 24.11.20240916.99dc878`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.18.5`
 - channels(root): `"nixos-24.05"`
 - nixpkgs: `/nix/store/cjz8w4dgc3rd2n3dqv5c208vygndjyba-source`

goyalyashpal commented 2 months ago

i specified llvmPackages_18.clangWithLibcAndBasicRtAndLibcxx by mistake, and ran nix-direnv-reload and it ran fine with clang --version showing 18.1.8.

so, it seems the problem is only in listing on the search results on web.