core/pkgs/build-support/coq/meta-fetch/default.nix
2024-06-30 09:12:46 +01:00

153 lines
3.5 KiB
Nix

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