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Merge pull request #5720 from tomberek/flake_search

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flakes: search up to git or filesystem boundary
This commit is contained in:
Théophane Hufschmitt 2022-01-18 10:59:12 +01:00 • committed by GitHub
commit dc4730ee94
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6 changed files with 110 additions and 12 deletions
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22
src/libexpr/flake/flakeref.cc
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@ -122,6 +122,28 @@ std::pair<FlakeRef, std::string> parseFlakeRefWithFragment(
if (isFlake) {
if (!allowMissing && !pathExists(path + "/flake.nix")){
notice("path '%s' does not contain a 'flake.nix', searching up",path);
// Save device to detect filesystem boundary
dev_t device = lstat(path).st_dev;
bool found = false;
while (path != "/") {
if (pathExists(path + "/flake.nix")) {
found = true;
break;
} else if (pathExists(path + "/.git"))
throw Error("path '%s' is not part of a flake (neither it nor its parent directories contain a 'flake.nix' file)", path);
else {
if (lstat(path).st_dev != device)
throw Error("unable to find a flake before encountering filesystem boundary at '%s'", path);
}
path = dirOf(path);
}
if (!found)
throw BadURL("could not find a flake.nix file");
}
if (!S_ISDIR(lstat(path).st_mode))
throw BadURL("path '%s' is not a flake (because it's not a directory)", path);