nixpkgs/pkgs/tools/nix/nix-init/get-nix-license.nix

76 lines
1.7 KiB
Nix

# vendored from src/get-nix-license.nix
{ lib, writeText }:
let
inherit (lib)
attrNames
concatMapAttrs
concatStringsSep
filterAttrs
flip
id
intersectLists
licenses
mapAttrsToList
optionalAttrs
pipe
warn
;
licenseMap = flip concatMapAttrs licenses
(k: v: optionalAttrs (v ? spdxId && !v.deprecated) { ${v.spdxId} = k; });
deprecatedAliases = {
"AGPL-3.0" = "agpl3Only";
"BSD-2-Clause-FreeBSD" = "bsd2WithViews";
"BSD-2-Clause-NetBSD" = "bsd2";
"GFDL-1.1" = "fdl11Only";
"GFDL-1.2" = "fdl12Only";
"GFDL-1.3" = "fdl13Only";
"GPL-1.0" = "gpl1Only";
"GPL-1.0+" = "gpl1Plus";
"GPL-2.0" = "gpl2Only";
"GPL-2.0+" = "gpl2Plus";
"GPL-3.0" = "gpl3Only";
"GPL-3.0+" = "gpl3Plus";
"LGPL-2.0" = "lgpl2Only";
"LGPL-2.0+" = "lgpl2Plus";
"LGPL-2.1" = "lgpl21Only";
"LGPL-2.1+" = "lgpl21Plus";
"LGPL-3.0" = "lgpl3Only";
"LGPL-3.0+" = "lgpl3Plus";
};
lints = {
"deprecated licenses" = intersectLists
(attrNames licenseMap)
(attrNames deprecatedAliases);
"invalid aliases" = attrNames (filterAttrs
(k: v: licenses.${v}.deprecated or true)
deprecatedAliases);
};
lint = flip pipe
(flip mapAttrsToList lints (k: v:
if v == [ ] then
id
else
warn "${k}: ${concatStringsSep ", " v}"));
arms = lint (concatStringsSep "\n "
(mapAttrsToList
(k: v: ''"${k}" => Some("${v}"),'')
(deprecatedAliases // licenseMap)));
in
writeText "get-nix-license.rs" ''
pub fn get_nix_license(license: &str) -> Option<&'static str> {
match license {
${arms}
_ => None,
}
}
''