core/pkgs/by-name/ll/llvm/common/common-let.nix

{ lib, fetchFromGitHub ? null, release_version ? null, gitRelease ? null
, officialRelease ? null, monorepoSrc' ? null }:

rec {
  llvm_meta = {
    license = lib.licenses.ncsa;
    # maintainers = lib.teams.llvm.members;

    # See llvm/cmake/config-ix.cmake.
    platforms = lib.platforms.aarch64 ++ lib.platforms.arm ++ lib.platforms.mips
      ++ lib.platforms.power ++ lib.platforms.s390x ++ lib.platforms.wasi
      ++ lib.platforms.x86
      ++ lib.optionals (lib.versionAtLeast release_version "7")
      lib.platforms.riscv
      ++ lib.optionals (lib.versionAtLeast release_version "14")
      lib.platforms.m68k;
  };

  releaseInfo = if gitRelease != null then rec {
    original = gitRelease;
    release_version = original.version;
    version = gitRelease.rev-version;
  } else rec {
    original = officialRelease;
    release_version = original.version;
    version = if original ? candidate then
      "${release_version}-${original.candidate}"
    else
      release_version;
  };

  monorepoSrc = if monorepoSrc' != null then
    monorepoSrc'
  else
    let
      sha256 = releaseInfo.original.sha256;
      rev = if gitRelease != null then
        gitRelease.rev
      else
        "llvmorg-${releaseInfo.version}";
    in fetchFromGitHub {
      owner = "llvm";
      repo = "llvm-project";
      inherit rev sha256;
    };

}