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# Not part of the public API – for use within nixpkgs only
#
# Usage:
# ```nix
# let
# sources = builtins.fromJSON (builtins.readFile ./sources.json);
# in mkMyDerivation rec {
# version = src.version; # This obviously only works for releases
# src = pkgs.npins.mkSource sources.mySource;
# }
# ```
{ fetchgit
, fetchzip
, fetchurl
}:
let
mkSource = spec:
assert spec ? type; let
path =
if spec.type == "Git" then mkGitSource spec
else if spec.type == "GitRelease" then mkGitSource spec
else if spec.type == "PyPi" then mkPyPiSource spec
else if spec.type == "Channel" then mkChannelSource spec
else throw "Unknown source type ${spec.type}";
in
spec // { outPath = path; };
mkGitSource = { repository, revision, url ? null, hash, ... }:
assert repository ? type;
# At the moment, either it is a plain git repository (which has an url), or it is a GitHub/GitLab repository
# In the latter case, there we will always be an url to the tarball
if url != null then
(fetchzip {
inherit url;
sha256 = hash;
extension = "tar";
})
else assert repository.type == "Git"; fetchgit {
url = repository.url;
rev = revision;
};
mkPyPiSource = { url, hash, ... }:
fetchurl {
inherit url;
sha256 = hash;
};
mkChannelSource = { url, hash, ... }:
fetchzip {
inherit url;
sha256 = hash;
extension = "tar";
};
in
mkSource
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