68 lines
2.5 KiB
Nix
68 lines
2.5 KiB
Nix
{ lib, fetchgit, fetchzip }:
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lib.makeOverridable (
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{ owner, repo, rev
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, name ? null # Override with null to use the default value
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, pname ? lib.concatStringsSep "-" ([ "source" domain ] ++ (lib.optional (group != null) group) ++ [ owner repo ])
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, fetchSubmodules ? false, leaveDotGit ? null
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, deepClone ? false, forceFetchGit ? false
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, sparseCheckout ? []
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, protocol ? "https", domain ? "gitlab.com", group ? null
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, passthru ? { }
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, meta ? { }
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, ... # For hash agility
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}@args:
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let
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name = if args.name or null != null then args.name
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else "${pname}-${rev}";
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position = (if args.meta.description or null != null
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then builtins.unsafeGetAttrPos "description" args.meta
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else builtins.unsafeGetAttrPos "rev" args
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);
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baseUrl = "${protocol}://${domain}/${slug}";
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newPassthru = passthru // {
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inherit rev owner repo;
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};
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newMeta = meta // {
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homepage = meta.homepage or baseUrl;
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} // lib.optionalAttrs (position != null) {
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# to indicate where derivation originates, similar to make-derivation.nix's mkDerivation
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position = "${position.file}:${toString position.line}";
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};
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passthruAttrs = removeAttrs args [ "protocol" "domain" "owner" "group" "repo" "rev" "fetchSubmodules" "forceFetchGit" "leaveDotGit" "deepClone" ];
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slug = lib.concatStringsSep "/" ((lib.optional (group != null) group) ++ [ owner repo ]);
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escapedSlug = lib.replaceStrings [ "." "/" ] [ "%2E" "%2F" ] slug;
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escapedRev = lib.replaceStrings [ "+" "%" "/" ] [ "%2B" "%25" "%2F" ] rev;
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useFetchGit = fetchSubmodules || (leaveDotGit == true) || deepClone || forceFetchGit || (sparseCheckout != []);
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# We prefer fetchzip in cases we don't need submodules as the hash
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# is more stable in that case.
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fetcher =
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if useFetchGit then fetchgit
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# fetchzip may not be overridable when using external tools, for example nix-prefetch
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else if fetchzip ? override then fetchzip.override { withUnzip = false; }
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else fetchzip;
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gitRepoUrl = "${baseUrl}.git";
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fetcherArgs = (if useFetchGit
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then {
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inherit rev deepClone fetchSubmodules sparseCheckout; url = gitRepoUrl;
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passthru = newPassthru;
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} // lib.optionalAttrs (leaveDotGit != null) { inherit leaveDotGit; }
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else {
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url = "${protocol}://${domain}/api/v4/projects/${escapedSlug}/repository/archive.tar.gz?sha=${escapedRev}";
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passthru = newPassthru // {
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inherit gitRepoUrl;
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};
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}
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) // passthruAttrs // { inherit name; };
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in
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(fetcher fetcherArgs).overrideAttrs (finalAttrs: previousAttrs: {
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meta = newMeta;
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})
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)
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