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Diffstat (limited to '')
-rw-r--r-- | npins/default.nix | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/npins/default.nix b/npins/default.nix new file mode 100644 index 0000000..891db57 --- /dev/null +++ b/npins/default.nix @@ -0,0 +1,64 @@ +# Generated by npins. Do not modify; will be overwritten regularly +let + requireFile = { sha256, hashMode ? "recursive" }: + builtins.derivation { + name = "source"; + outputHashMode = hashMode; + outputHashAlgo = "sha256"; + outputHash = sha256; + preferLocalBuild = true; + allowSubstitutes = false; + builder = "builtins:fetchurl"; + system = "builtin"; # builtins.currentSystem; + }; + + data = builtins.fromJSON (builtins.readFile ./sources.json); + version = data.version; + + 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 builtins.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 + (builtins.fetchTarball { + inherit url; + sha256 = hash; # FIXME: check nix version & use SRI hashes + }) + else assert repository.type == "Git"; + let + cached = requireFile { sha256 = hash; }; + fetched = builtins.fetchGit { + url = repository.url; + rev = revision; + }; + in if builtins.pathExists (builtins.unsafeDiscardStringContext cached.outPath) + then cached.outPath + else builtins.trace "npins: re-fetching source ${repository.url}" fetched.outPath; + + mkPyPiSource = { url, hash, ... }: + builtins.fetchurl { + inherit url; + sha256 = hash; + }; + + mkChannelSource = { url, hash, ... }: + builtins.fetchTarball { + inherit url; + sha256 = hash; + }; +in +if version == 3 then + builtins.mapAttrs (_: mkSource) data.pins +else + throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`" |