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Enforce use of immutable flakes in pure mode

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... plus a temporary hack to allow impure flakes at top-level for the
default installation source.
This commit is contained in:
Eelco Dolstra 2019-02-12 21:05:44 +01:00
parent ba05f29838
commit 272b58220d
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GPG key ID: 8170B4726D7198DE
6 changed files with 46 additions and 19 deletions
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6
src/libexpr/primops/fetchGit.cc
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@ -22,9 +22,6 @@ GitInfo exportGit(ref<Store> store, const std::string & uri,
std::optional<std::string> ref, std::string rev,
const std::string & name)
{
if (evalSettings.pureEval && rev == "")
throw Error("in pure evaluation mode, 'fetchGit' requires a Git revision");
if (!ref && rev == "" && hasPrefix(uri, "/") && pathExists(uri + "/.git")) {
bool clean = true;
@ -218,6 +215,9 @@ static void prim_fetchGit(EvalState & state, const Pos & pos, Value * * args, Va
// whitelist. Ah well.
state.checkURI(url);
if (evalSettings.pureEval && rev == "")
throw Error("in pure evaluation mode, 'fetchGit' requires a Git revision");
auto gitInfo = exportGit(state.store, url, ref, rev, name);
state.mkAttrs(v, 8);