Something went wrong. Try again.
lol
Something went wrong. Try again.
6.8 kB · 213 lines
Nix
at master
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214{ lib, repoRevToNameMaybe, fetchgit, fetchzip,}:let # Here defines fetchFromGitHub arguments that determines useFetchGit, # The attribute value is their default values. # As fetchFromGitHub prefers fetchzip for hash stability, # `defaultFetchGitArgs` attributes should lead to `useFetchGit = false`. useFetchGitArgsDefault = { deepClone = false; fetchSubmodules = false; # This differs from fetchgit's default fetchLFS = false; forceFetchGit = false; leaveDotGit = null; postCheckout = ""; rootDir = ""; sparseCheckout = null; }; useFetchGitArgsDefaultNullable = { leaveDotGit = false; sparseCheckout = [ ]; };
useFetchGitargsDefaultNonNull = useFetchGitArgsDefault // useFetchGitArgsDefaultNullable;
# useFetchGitArgsWD to exclude from automatic passing. # Other useFetchGitArgsWD will pass down to fetchgit. excludeUseFetchGitArgNames = [ "forceFetchGit" ];
faUseFetchGit = lib.mapAttrs (_: _: true) useFetchGitArgsDefault;
adjustFunctionArgs = f: lib.setFunctionArgs f (faUseFetchGit // lib.functionArgs f);
decorate = f: lib.makeOverridable (adjustFunctionArgs f);indecorate ( { owner, repo, tag ? null, rev ? null, # TODO(@ShamrockLee): Add back after reconstruction with lib.extendMkDerivation # name ? repoRevToNameMaybe finalAttrs.repo (lib.revOrTag finalAttrs.revCustom finalAttrs.tag) "github", private ? false, githubBase ? "github.com", varPrefix ? null, passthru ? { }, meta ? { }, ... # For hash agility and additional fetchgit arguments }@args:
assert ( lib.assertMsg (lib.xor (tag == null) ( rev == null )) "fetchFromGitHub requires one of either `rev` or `tag` to be provided (not both)." );
let useFetchGit = lib.mapAttrs ( name: nonNullDefault: if args ? ${name} && (useFetchGitArgsDefaultNullable ? ${name} -> args.${name} != null) then args.${name} else nonNullDefault ) useFetchGitargsDefaultNonNull != useFetchGitargsDefaultNonNull;
useFetchGitArgsWDPassing = lib.overrideExisting (removeAttrs useFetchGitArgsDefault excludeUseFetchGitArgNames) args;
position = ( if args.meta.description or null != null then builtins.unsafeGetAttrPos "description" args.meta else if tag != null then builtins.unsafeGetAttrPos "tag" args else builtins.unsafeGetAttrPos "rev" args ); baseUrl = "https://${githubBase}/${owner}/${repo}"; newMeta = meta // { homepage = meta.homepage or baseUrl; } // lib.optionalAttrs (position != null) { # to indicate where derivation originates, similar to make-derivation.nix's mkDerivation position = "${position.file}:${toString position.line}"; }; passthruAttrs = removeAttrs args ( [ "owner" "repo" "tag" "rev" "private" "githubBase" "varPrefix" ] ++ (if useFetchGit then excludeUseFetchGitArgNames else lib.attrNames faUseFetchGit) ); varBase = "NIX${lib.optionalString (varPrefix != null) "_${varPrefix}"}_GITHUB_PRIVATE_"; # We prefer fetchzip in cases we don't need submodules as the hash # is more stable in that case. fetcher = if useFetchGit then fetchgit # fetchzip may not be overridable when using external tools, for example nix-prefetch else if fetchzip ? override then fetchzip.override { withUnzip = false; } else fetchzip; privateAttrs = lib.optionalAttrs private { netrcPhase = # When using private repos: # - Fetching with git works using https://github.com but not with the GitHub API endpoint # - Fetching a tarball from a private repo requires to use the GitHub API endpoint let machineName = if githubBase == "github.com" && !useFetchGit then "api.github.com" else githubBase; in '' if [ -z "''$${varBase}USERNAME" -o -z "''$${varBase}PASSWORD" ]; then echo "Error: Private fetchFromGitHub requires the nix building process (nix-daemon in multi user mode) to have the ${varBase}USERNAME and ${varBase}PASSWORD env vars set." >&2 exit 1 fi cat > netrc <<EOF machine ${machineName} login ''$${varBase}USERNAME password ''$${varBase}PASSWORD EOF ''; netrcImpureEnvVars = [ "${varBase}USERNAME" "${varBase}PASSWORD" ]; };
gitRepoUrl = "${baseUrl}.git";
fetcherArgs = finalAttrs: passthruAttrs // ( if useFetchGit then useFetchGitArgsWDPassing // { inherit tag rev; url = gitRepoUrl; inherit passthru; derivationArgs = { inherit githubBase owner repo ; }; } else let revWithTag = finalAttrs.rev; in { # Use the API endpoint for private repos, as the archive URI doesn't # support access with GitHub's fine-grained access tokens. # # Use the archive URI for non-private repos, as the API endpoint has # relatively restrictive rate limits for unauthenticated users. url = if private then let endpoint = "/repos/${finalAttrs.owner}/${finalAttrs.repo}/tarball/${revWithTag}"; in if githubBase == "github.com" then "https://api.github.com${endpoint}" else "https://${githubBase}/api/v3${endpoint}" else "${baseUrl}/archive/${revWithTag}.tar.gz"; extension = "tar.gz"; derivationArgs = { inherit githubBase owner repo tag ; rev = fetchgit.getRevWithTag { inherit (finalAttrs) tag; rev = finalAttrs.revCustom; }; revCustom = rev; }; passthru = { inherit gitRepoUrl; } // passthru; } ) // privateAttrs // { # TODO(@ShamrockLee): Change back to `inherit name;` after reconstruction with lib.extendMkDerivation name = args.name or (repoRevToNameMaybe finalAttrs.repo (lib.revOrTag finalAttrs.revCustom finalAttrs.tag) "github"); meta = newMeta; }; in
fetcher fetcherArgs)