core/pkgs/build-support/fetchhg/default.nix
2024-06-30 09:16:52 +01:00

42 lines
924 B
Nix

{
lib,
stdenvNoCC,
mercurial,
}:
{
name ? null,
url,
rev ? null,
sha256 ? null,
hash ? null,
fetchSubrepos ? false,
preferLocalBuild ? true,
}:
if hash != null && sha256 != null then
throw "Only one of sha256 or hash can be set"
else
# TODO: statically check if mercurial as the https support if the url starts woth https.
stdenvNoCC.mkDerivation {
name = "hg-archive" + (lib.optionalString (name != null) "-${name}");
builder = ./builder.sh;
nativeBuildInputs = [ mercurial ];
impureEnvVars = lib.fetchers.proxyImpureEnvVars;
subrepoClause = lib.optionalString fetchSubrepos "S";
outputHashAlgo = if hash != null then null else "sha256";
outputHashMode = "recursive";
outputHash =
if hash != null then
hash
else if sha256 != null then
sha256
else
lib.fakeSha256;
inherit url rev;
inherit preferLocalBuild;
}