119 lines
3.4 KiB
Nix
119 lines
3.4 KiB
Nix
{ lib, stdenv, fetchzip }@args:
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let
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lib = import ../extra-lib.nix { inherit (args) lib; };
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inherit (lib)
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attrNames fakeSha256 filter findFirst head isAttrs isPath isString last
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length optionalAttrs pathExists pred sort switch switch-if versionAtLeast
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versions;
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inherit (lib.strings) match split;
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default-fetcher = { domain ? "github.com", owner ? "", repo, rev
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, name ? "source", sha256 ? null, ... }@args:
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let
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ext = if args ? sha256 then "zip" else "tar.gz";
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fmt = if args ? sha256 then "zip" else "tarball";
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pr = match "^#(.*)$" rev;
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url = switch-if [
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{
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cond = pr == null && (match "^github.*" domain) != null;
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out = "https://${domain}/${owner}/${repo}/archive/${rev}.${ext}";
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}
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{
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cond = pr != null && (match "^github.*" domain) != null;
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out = "https://api.${domain}/repos/${owner}/${repo}/${fmt}/pull/${
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head pr
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}/head";
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}
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{
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cond = pr == null && (match "^gitlab.*" domain) != null;
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out =
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"https://${domain}/${owner}/${repo}/-/archive/${rev}/${repo}-${rev}.${ext}";
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}
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{
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cond = (match "(www.)?mpi-sws.org" domain) != null;
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out =
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"https://www.mpi-sws.org/~${owner}/${repo}/download/${repo}-${rev}.${ext}";
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}
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] (throw "meta-fetch: no fetcher found for domain ${domain} on ${rev}");
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fetch = x:
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if args ? sha256 then
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fetchzip (x // { inherit sha256; })
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else
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builtins.fetchTarball x;
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in fetch { inherit url; };
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in { fetcher ? default-fetcher, location, release ? { }, releaseRev ? (v: v), }:
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let
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isVersion = x: isString x && match "^/.*" x == null && release ? ${x};
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shortVersion = x:
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if (isString x && match "^/.*" x == null) then
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findFirst (v: versions.majorMinor v == x) null
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(sort versionAtLeast (attrNames release))
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else
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null;
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isShortVersion = x: shortVersion x != null;
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isPathString = x: isString x && match "^/.*" x != null && pathExists x;
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in arg:
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switch arg [
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{
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case = isNull;
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out = {
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version = "broken";
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src = "";
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broken = true;
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};
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}
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{
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case = isPathString;
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out = {
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version = "dev";
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src = arg;
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};
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}
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{
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case = pred.union isVersion isShortVersion;
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out = let
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v = if isVersion arg then arg else shortVersion arg;
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given-sha256 = release.${v}.sha256 or "";
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sha256 = if given-sha256 == "" then fakeSha256 else given-sha256;
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rv = release.${v} // { inherit sha256; };
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in {
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version = rv.version or v;
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src = rv.src or fetcher (location // { rev = releaseRev v; } // rv);
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};
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}
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{
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case = isString;
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out = let
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splitted = filter isString (split ":" arg);
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rev = last splitted;
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has-owner = length splitted > 1;
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version = "dev";
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in {
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inherit version;
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src = fetcher (location // {
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inherit rev;
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} // (optionalAttrs has-owner { owner = head splitted; }));
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};
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}
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{
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case = isAttrs;
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out = {
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version = arg.version or "dev";
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src = (arg.fetcher or fetcher) (location // (arg.location or { }));
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};
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}
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{
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case = isPath;
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out = {
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version = "dev";
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src = builtins.path {
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path = arg;
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name = location.name or "source";
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};
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};
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}
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] (throw "not a valid source description")
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