isabelroses.com
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WIP
+108
-94
fetcher.nix
+108
-94
fetcher.nix
···
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{
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lib,
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repoRevToNameMaybe,
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stdenvNoCC,
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fetchgit,
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fetchzip,
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}:
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lib.makeOverridable (
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{
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domain ? "tangled.sh",
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owner,
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repo,
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rev ? null,
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tag ? null,
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name ? repoRevToNameMaybe repo (lib.revOrTag rev tag) "tangled",
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lib.extendMkDerivation {
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constructDrv = stdenvNoCC.mkDerivation;
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# fetchgit stuff
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fetchSubmodules ? false,
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leaveDotGit ? false,
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deepClone ? false,
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forceFetchGit ? false,
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fetchLFS ? false,
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sparseCheckout ? [ ],
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excludeDrvArgNames = [
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# Additional stdenv.mkDerivation arguments from derived fetchers.
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"derivationArgs"
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meta ? { },
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...
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}@args:
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"hash"
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];
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assert lib.assertMsg (lib.xor (tag != null) (
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rev != null
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)) "fetchFromTangled requires one of either `rev` or `tag` to be provided (not both).";
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extendDrvArgs =
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finalAttrs:
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{
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domain ? "tangled.sh",
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owner,
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repo,
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rev ? null,
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tag ? null,
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name ? repoRevToNameMaybe repo (lib.revOrTag rev tag) "tangled",
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let
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# fetchgit stuff
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fetchSubmodules ? false,
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leaveDotGit ? false,
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deepClone ? false,
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forceFetchGit ? false,
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fetchLFS ? false,
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sparseCheckout ? [ ],
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position = (
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if args.meta.description or null != null then
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builtins.unsafeGetAttrPos "description" args.meta
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else if tag != null then
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builtins.unsafeGetAttrPos "tag" args
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else
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builtins.unsafeGetAttrPos "rev" args
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);
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meta ? { },
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...
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}@args:
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baseUrl = "https://${domain}/${owner}/${repo}";
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assert lib.assertMsg (lib.xor (tag != null) (
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rev != null
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)) "fetchFromTangled requires one of either `rev` or `tag` to be provided (not both).";
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newMeta =
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meta
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// {
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homepage = meta.homepage or baseUrl;
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}
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// lib.optionalAttrs (position != null) {
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# to indicate where derivation originates, similar to make-derivation.nix's mkDerivation
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position = "${position.file}:${toString position.line}";
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};
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let
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passthruAttrs = removeAttrs args [
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"domain"
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"owner"
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"repo"
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"tag"
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"rev"
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"fetchSubmodules"
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"forceFetchGit"
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];
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position = (
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if args.meta.description or null != null then
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builtins.unsafeGetAttrPos "description" args.meta
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else if tag != null then
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builtins.unsafeGetAttrPos "tag" args
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else
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builtins.unsafeGetAttrPos "rev" args
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);
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useFetchGit =
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fetchSubmodules || leaveDotGit || deepClone || forceFetchGit || fetchLFS || (sparseCheckout != [ ]);
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baseUrl = "https://${domain}/${owner}/${repo}";
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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
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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
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fetchzip.override { withUnzip = false; }
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else
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fetchzip;
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newMeta =
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meta
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// {
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homepage = meta.homepage or baseUrl;
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}
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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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revWithTag = if tag != null then "refs%2Ftags%2F${tag}" else rev;
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passthruAttrs = removeAttrs args [
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"domain"
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"owner"
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"repo"
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"tag"
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"rev"
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"fetchSubmodules"
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"forceFetchGit"
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];
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+
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useFetchGit =
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fetchSubmodules || leaveDotGit || deepClone || forceFetchGit || fetchLFS || (sparseCheckout != [ ]);
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# We prefer fetchzip in cases we don't need submodules as the hash
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# is more stable in that case.
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fetcher =
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if useFetchGit then
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fetchgit
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# fetchzip may not be overridable when using external tools, for example nix-prefetch
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else if fetchzip ? override then
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fetchzip.override { withUnzip = false; }
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else
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fetchzip;
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revWithTag = if tag != null then "refs%2Ftags%2F${tag}" else rev;
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fetcherArgs =
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(
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if useFetchGit then
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{
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inherit
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tag
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rev
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deepClone
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fetchSubmodules
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sparseCheckout
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fetchLFS
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leaveDotGit
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;
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url = baseUrl;
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}
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else
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{
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url = "${baseUrl}/archive/${revWithTag}";
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extension = "tar.gz";
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fetcherArgs =
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(
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if useFetchGit then
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{
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inherit
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tag
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rev
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deepClone
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fetchSubmodules
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sparseCheckout
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fetchLFS
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leaveDotGit
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;
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url = baseUrl;
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}
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else
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{
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url = "${baseUrl}/archive/${revWithTag}";
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extension = "tar.gz";
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passthru = {
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gitRepoUrl = baseUrl;
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};
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}
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)
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// passthruAttrs
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// {
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inherit name;
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};
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in
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passthru = {
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gitRepoUrl = baseUrl;
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};
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}
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)
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// passthruAttrs
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fetcher fetcherArgs
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// {
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inherit name;
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meta = newMeta;
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inherit owner repo tag;
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rev = revWithTag;
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};
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in
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fetcher fetcherArgs
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// {
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meta = newMeta;
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inherit owner repo tag;
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rev = revWithTag;
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}
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)