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libfetchers/tarball: Lock on effectiveUrl

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Basically, if a tarball URL is used as a flake input, and the URL leads
to a redirect, the final redirect destination would be recorded as the
locked URL.

This allows tarballs under https://nixos.org/channels to be used as
flake inputs. If we, as before, lock on to the original URL it would
break every time the channel updates.
This commit is contained in:
dramforever 2021-03-02 21:56:50 +08:00
parent e64cf8e0a3
commit fc6bfb261d
3 changed files with 24 additions and 9 deletions
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6
src/libfetchers/github.cc
View file

@ -207,16 +207,16 @@ struct GitArchiveInputScheme : InputScheme
auto url = getDownloadUrl(input);
auto [tree, lastModified] = downloadTarball(store, url.url, "source", true, url.headers);
auto [tree, meta] = downloadTarball(store, url.url, "source", true, url.headers);
input.attrs.insert_or_assign("lastModified", uint64_t(lastModified));
input.attrs.insert_or_assign("lastModified", uint64_t(meta.lastModified));
getCache()->add(
store,
immutableAttrs,
{
{"rev", rev->gitRev()},
{"lastModified", uint64_t(lastModified)}
{"lastModified", uint64_t(meta.lastModified)}
},
tree.storePath,
true);