forked from lix-project/lix
Merge branch 'fetchgit-recursive' of https://github.com/blitz/nix
This commit is contained in:
commit
55cefd41d6
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@ -422,6 +422,16 @@ stdenv.mkDerivation { … }
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>submodules</term>
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<listitem>
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<para>
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A Boolean parameter that specifies whether submodules
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should be checked out. Defaults to
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<literal>false</literal>.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<example>
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@ -13,6 +13,7 @@ static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Va
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std::optional<std::string> ref;
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std::optional<Hash> rev;
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std::string name = "source";
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bool fetchSubmodules = false;
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PathSet context;
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state.forceValue(*args[0]);
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@ -31,6 +32,8 @@ static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Va
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rev = Hash(state.forceStringNoCtx(*attr.value, *attr.pos), htSHA1);
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else if (n == "name")
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name = state.forceStringNoCtx(*attr.value, *attr.pos);
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else if (n == "submodules")
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fetchSubmodules = state.forceBool(*attr.value, *attr.pos);
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else
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throw EvalError("unsupported argument '%s' to 'fetchGit', at %s", attr.name, *attr.pos);
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}
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@ -48,15 +51,15 @@ static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Va
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if (evalSettings.pureEval && !rev)
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throw Error("in pure evaluation mode, 'fetchGit' requires a Git revision");
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auto parsedUrl = parseURL(
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url.find("://") != std::string::npos
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? "git+" + url
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: "git+file://" + url);
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if (ref) parsedUrl.query.insert_or_assign("ref", *ref);
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if (rev) parsedUrl.query.insert_or_assign("rev", rev->gitRev());
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// FIXME: use name
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auto input = fetchers::inputFromURL(parsedUrl);
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fetchers::Attrs attrs;
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attrs.insert_or_assign("type", "git");
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attrs.insert_or_assign("url", url.find("://") != std::string::npos ? url : "file://" + url);
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if (ref) attrs.insert_or_assign("ref", *ref);
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if (rev) attrs.insert_or_assign("rev", rev->gitRev());
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if (fetchSubmodules) attrs.insert_or_assign("submodules", true);
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auto input = fetchers::inputFromAttrs(attrs);
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// FIXME: use name?
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auto [tree, input2] = input->fetchTree(state.store);
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state.mkAttrs(v, 8);
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@ -70,6 +73,7 @@ static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Va
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// Backward compatibility: set 'revCount' to 0 for a dirty tree.
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mkInt(*state.allocAttr(v, state.symbols.create("revCount")),
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tree.info.revCount.value_or(0));
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mkBool(*state.allocAttr(v, state.symbols.create("submodules")), fetchSubmodules);
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v.attrs->sort();
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if (state.allowedPaths)
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@ -15,12 +15,20 @@ static std::string readHead(const Path & path)
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return chomp(runProgram("git", true, { "-C", path, "rev-parse", "--abbrev-ref", "HEAD" }));
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}
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static bool isNotDotGitDirectory(const Path & path)
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{
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static const std::regex gitDirRegex("^(?:.*/)?\\.git$");
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return not std::regex_match(path, gitDirRegex);
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}
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struct GitInput : Input
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{
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ParsedURL url;
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std::optional<std::string> ref;
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std::optional<Hash> rev;
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bool shallow = false;
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bool submodules = false;
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GitInput(const ParsedURL & url) : url(url)
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{ }
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@ -66,6 +74,8 @@ struct GitInput : Input
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attrs.emplace("rev", rev->gitRev());
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if (shallow)
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attrs.emplace("shallow", true);
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if (submodules)
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attrs.emplace("submodules", true);
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return attrs;
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}
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@ -87,7 +97,9 @@ struct GitInput : Input
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assert(!rev || rev->type == htSHA1);
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auto cacheType = shallow ? "git-shallow" : "git";
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std::string cacheType = "git";
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if (shallow) cacheType += "-shallow";
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if (submodules) cacheType += "-submodules";
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auto getImmutableAttrs = [&]()
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{
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@ -161,8 +173,12 @@ struct GitInput : Input
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if (settings.warnDirty)
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warn("Git tree '%s' is dirty", actualUrl);
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auto gitOpts = Strings({ "-C", actualUrl, "ls-files", "-z" });
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if (submodules)
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gitOpts.emplace_back("--recurse-submodules");
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auto files = tokenizeString<std::set<std::string>>(
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runProgram("git", true, { "-C", actualUrl, "ls-files", "-z" }), "\0"s);
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runProgram("git", true, gitOpts), "\0"s);
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PathFilter filter = [&](const Path & p) -> bool {
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assert(hasPrefix(p, actualUrl));
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@ -299,6 +315,27 @@ struct GitInput : Input
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if (auto res = getCache()->lookup(store, getImmutableAttrs()))
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return makeResult(res->first, std::move(res->second));
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Path tmpDir = createTempDir();
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AutoDelete delTmpDir(tmpDir, true);
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PathFilter filter = defaultPathFilter;
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if (submodules) {
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Path tmpGitDir = createTempDir();
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AutoDelete delTmpGitDir(tmpGitDir, true);
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runProgram("git", true, { "init", tmpDir, "--separate-git-dir", tmpGitDir });
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// TODO: repoDir might lack the ref (it only checks if rev
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// exists, see FIXME above) so use a big hammer and fetch
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// everything to ensure we get the rev.
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runProgram("git", true, { "-C", tmpDir, "fetch", "--quiet", "--force",
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"--update-head-ok", "--", repoDir, "refs/*:refs/*" });
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runProgram("git", true, { "-C", tmpDir, "checkout", "--quiet", input->rev->gitRev() });
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runProgram("git", true, { "-C", tmpDir, "remote", "add", "origin", actualUrl });
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runProgram("git", true, { "-C", tmpDir, "submodule", "--quiet", "update", "--init", "--recursive" });
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filter = isNotDotGitDirectory;
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} else {
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// FIXME: should pipe this, or find some better way to extract a
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// revision.
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auto source = sinkToSource([&](Sink & sink) {
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@ -307,12 +344,10 @@ struct GitInput : Input
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runProgram2(gitOptions);
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});
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Path tmpDir = createTempDir();
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AutoDelete delTmpDir(tmpDir, true);
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unpackTarfile(*source, tmpDir);
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}
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auto storePath = store->addToStore(name, tmpDir);
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auto storePath = store->addToStore(name, tmpDir, true, htSHA256, filter);
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auto lastModified = std::stoull(runProgram("git", true, { "-C", repoDir, "log", "-1", "--format=%ct", input->rev->gitRev() }));
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@ -378,7 +413,7 @@ struct GitInputScheme : InputScheme
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if (maybeGetStrAttr(attrs, "type") != "git") return {};
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for (auto & [name, value] : attrs)
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if (name != "type" && name != "url" && name != "ref" && name != "rev" && name != "shallow")
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if (name != "type" && name != "url" && name != "ref" && name != "rev" && name != "shallow" && name != "submodules")
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throw Error("unsupported Git input attribute '%s'", name);
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auto input = std::make_unique<GitInput>(parseURL(getStrAttr(attrs, "url")));
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@ -392,6 +427,8 @@ struct GitInputScheme : InputScheme
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input->shallow = maybeGetBoolAttr(attrs, "shallow").value_or(false);
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input->submodules = maybeGetBoolAttr(attrs, "submodules").value_or(false);
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return input;
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}
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};
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97
tests/fetchGitSubmodules.sh
Normal file
97
tests/fetchGitSubmodules.sh
Normal file
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@ -0,0 +1,97 @@
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source common.sh
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set -u
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if [[ -z $(type -p git) ]]; then
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echo "Git not installed; skipping Git submodule tests"
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exit 99
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fi
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clearStore
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rootRepo=$TEST_ROOT/gitSubmodulesRoot
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subRepo=$TEST_ROOT/gitSubmodulesSub
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rm -rf ${rootRepo} ${subRepo} $TEST_HOME/.cache/nix
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initGitRepo() {
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git init $1
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git -C $1 config user.email "foobar@example.com"
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git -C $1 config user.name "Foobar"
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}
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addGitContent() {
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echo "lorem ipsum" > $1/content
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git -C $1 add content
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git -C $1 commit -m "Initial commit"
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}
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initGitRepo $subRepo
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addGitContent $subRepo
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initGitRepo $rootRepo
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git -C $rootRepo submodule init
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git -C $rootRepo submodule add $subRepo sub
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git -C $rootRepo add sub
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git -C $rootRepo commit -m "Add submodule"
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rev=$(git -C $rootRepo rev-parse HEAD)
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r1=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; }).outPath")
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r2=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; submodules = false; }).outPath")
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r3=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; submodules = true; }).outPath")
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[[ $r1 == $r2 ]]
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[[ $r2 != $r3 ]]
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r4=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; ref = \"master\"; rev = \"$rev\"; }).outPath")
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r5=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; ref = \"master\"; rev = \"$rev\"; submodules = false; }).outPath")
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r6=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; ref = \"master\"; rev = \"$rev\"; submodules = true; }).outPath")
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r7=$(nix eval --raw "(builtins.fetchGit { url = $rootRepo; ref = \"master\"; rev = \"$rev\"; submodules = true; }).outPath")
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r8=$(nix eval --raw "(builtins.fetchGit { url = $rootRepo; rev = \"$rev\"; submodules = true; }).outPath")
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[[ $r1 == $r4 ]]
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[[ $r4 == $r5 ]]
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[[ $r3 == $r6 ]]
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[[ $r6 == $r7 ]]
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[[ $r7 == $r8 ]]
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have_submodules=$(nix eval "(builtins.fetchGit { url = $rootRepo; rev = \"$rev\"; }).submodules")
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[[ $have_submodules == false ]]
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have_submodules=$(nix eval "(builtins.fetchGit { url = $rootRepo; rev = \"$rev\"; submodules = false; }).submodules")
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[[ $have_submodules == false ]]
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have_submodules=$(nix eval "(builtins.fetchGit { url = $rootRepo; rev = \"$rev\"; submodules = true; }).submodules")
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[[ $have_submodules == true ]]
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pathWithoutSubmodules=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; }).outPath")
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pathWithSubmodules=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; submodules = true; }).outPath")
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pathWithSubmodulesAgain=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; rev = \"$rev\"; submodules = true; }).outPath")
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pathWithSubmodulesAgainWithRef=$(nix eval --raw "(builtins.fetchGit { url = file://$rootRepo; ref = \"master\"; rev = \"$rev\"; submodules = true; }).outPath")
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# The resulting store path cannot be the same.
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[[ $pathWithoutSubmodules != $pathWithSubmodules ]]
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# Checking out the same repo with submodules returns in the same store path.
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[[ $pathWithSubmodules == $pathWithSubmodulesAgain ]]
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# Checking out the same repo with submodules returns in the same store path.
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[[ $pathWithSubmodulesAgain == $pathWithSubmodulesAgainWithRef ]]
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# The submodules flag is actually honored.
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[[ ! -e $pathWithoutSubmodules/sub/content ]]
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[[ -e $pathWithSubmodules/sub/content ]]
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[[ -e $pathWithSubmodulesAgainWithRef/sub/content ]]
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# No .git directory or submodule reference files must be left
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test "$(find "$pathWithSubmodules" -name .git)" = ""
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# Git repos without submodules can be fetched with submodules = true.
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subRev=$(git -C $subRepo rev-parse HEAD)
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noSubmoduleRepoBaseline=$(nix eval --raw "(builtins.fetchGit { url = file://$subRepo; rev = \"$subRev\"; }).outPath")
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noSubmoduleRepo=$(nix eval --raw "(builtins.fetchGit { url = file://$subRepo; rev = \"$subRev\"; submodules = true; }).outPath")
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[[ $noSubmoduleRepoBaseline == $noSubmoduleRepo ]]
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@ -17,6 +17,7 @@ nix_tests = \
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nar-access.sh \
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structured-attrs.sh \
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fetchGit.sh \
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fetchGitSubmodules.sh \
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fetchMercurial.sh \
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signing.sh \
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run.sh \
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