builtins.fetchgit: Support importing a working tree
For example, you can write src = fetchgit ./.; and if ./. refers to an unclean working tree, that tree will be copied to the Nix store. This removes the need for "cleanSource".
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197922ea4e
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7 changed files with 54 additions and 17 deletions
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@ -667,7 +667,7 @@ std::pair<bool, std::string> EvalState::resolveSearchPathElem(const SearchPathEl
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try {
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if (hasPrefix(elem.second, "git://") || hasSuffix(elem.second, ".git"))
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// FIXME: support specifying revision/branch
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res = { true, exportGit(store, elem.second, "master").storePath };
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res = { true, exportGit(store, elem.second).storePath };
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else
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res = { true, getDownloader()->downloadCached(store, elem.second, true) };
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} catch (DownloadError & e) {
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@ -16,9 +16,48 @@ using namespace std::string_literals;
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namespace nix {
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GitInfo exportGit(ref<Store> store, const std::string & uri,
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const std::string & ref, const std::string & rev,
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std::experimental::optional<std::string> ref, const std::string & rev,
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const std::string & name)
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{
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if (!ref && rev == "" && hasPrefix(uri, "/") && pathExists(uri + "/.git")) {
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bool clean = true;
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try {
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runProgram("git", true, { "-C", uri, "diff-index", "--quiet", "HEAD", "--" });
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} catch (ExecError e) {
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if (!WIFEXITED(e.status) || WEXITSTATUS(e.status) != 1) throw;
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clean = false;
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}
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if (!clean) {
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/* This is an unclean working tree. So copy all tracked
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files. */
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GitInfo gitInfo;
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gitInfo.rev = "0000000000000000000000000000000000000000";
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gitInfo.shortRev = std::string(gitInfo.rev, 0, 7);
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auto files = tokenizeString<std::set<std::string>>(
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runProgram("git", true, { "-C", uri, "ls-files", "-z" }), "\0"s);
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PathFilter filter = [&](const Path & p) -> bool {
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assert(hasPrefix(p, uri));
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auto st = lstat(p);
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if (S_ISDIR(st.st_mode)) return true;
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std::string file(p, uri.size() + 1);
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return files.count(file);
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};
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gitInfo.storePath = store->addToStore("source", uri, true, htSHA256, filter);
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return gitInfo;
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}
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}
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if (!ref) ref = "master";
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if (rev != "") {
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std::regex revRegex("^[0-9a-fA-F]{40}$");
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if (!std::regex_match(rev, revRegex))
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@ -32,7 +71,7 @@ GitInfo exportGit(ref<Store> store, const std::string & uri,
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runProgram("git", true, { "init", "--bare", cacheDir });
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}
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std::string localRef = hashString(htSHA256, fmt("%s-%s", uri, ref)).to_string(Base32, false);
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std::string localRef = hashString(htSHA256, fmt("%s-%s", uri, *ref)).to_string(Base32, false);
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Path localRefFile = cacheDir + "/refs/heads/" + localRef;
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@ -47,7 +86,7 @@ GitInfo exportGit(ref<Store> store, const std::string & uri,
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// FIXME: git stderr messes up our progress indicator, so
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// we're using --quiet for now. Should process its stderr.
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runProgram("git", true, { "-C", cacheDir, "fetch", "--quiet", "--force", "--", uri, ref + ":" + localRef });
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runProgram("git", true, { "-C", cacheDir, "fetch", "--quiet", "--force", "--", uri, *ref + ":" + localRef });
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struct timeval times[2];
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times[0].tv_sec = now;
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@ -114,7 +153,7 @@ GitInfo exportGit(ref<Store> store, const std::string & uri,
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static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Value & v)
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{
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std::string url;
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std::string ref = "master";
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std::experimental::optional<std::string> ref;
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std::string rev;
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std::string name = "source";
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PathSet context;
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@ -145,7 +184,7 @@ static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Va
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} else
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url = state.coerceToString(pos, *args[0], context, false, false);
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if (hasPrefix(url, "/")) url = "file://" + url;
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if (!isUri(url)) url = absPath(url);
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// FIXME: git externals probably can be used to bypass the URI
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// whitelist. Ah well.
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@ -17,7 +17,8 @@ struct GitInfo
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};
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GitInfo exportGit(ref<Store> store, const std::string & uri,
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const std::string & ref, const std::string & rev = "",
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std::experimental::optional<std::string> ref = {},
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const std::string & rev = "",
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const std::string & name = "");
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}
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@ -29,7 +29,7 @@ const std::string narVersionMagic1 = "nix-archive-1";
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static string caseHackSuffix = "~nix~case~hack~";
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PathFilter defaultPathFilter;
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PathFilter defaultPathFilter = [](const Path &) { return true; };
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static void dumpContents(const Path & path, size_t size,
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@ -44,13 +44,6 @@ namespace nix {
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`+' denotes string concatenation. */
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struct PathFilter
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{
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virtual ~PathFilter() { }
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virtual bool operator () (const Path & path) { return true; }
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};
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extern PathFilter defaultPathFilter;
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void dumpPath(const Path & path, Sink & sink,
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PathFilter & filter = defaultPathFilter);
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@ -93,8 +93,6 @@ Hash hashFile(HashType ht, const Path & path);
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/* Compute the hash of the given path. The hash is defined as
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(essentially) hashString(ht, dumpPath(path)). */
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struct PathFilter;
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extern PathFilter defaultPathFilter;
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typedef std::pair<Hash, unsigned long long> HashResult;
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HashResult hashPath(HashType ht, const Path & path,
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PathFilter & filter = defaultPathFilter);
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@ -481,4 +481,10 @@ struct MaintainCount
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std::pair<unsigned short, unsigned short> getWindowSize();
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/* Used in various places. */
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typedef std::function<bool(const Path & path)> PathFilter;
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extern PathFilter defaultPathFilter;
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}
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