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-rw-r--r--src/libexpr/flake/flake.cc7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/libexpr/flake/flake.cc b/src/libexpr/flake/flake.cc
index 2e94490d4..8e6f06949 100644
--- a/src/libexpr/flake/flake.cc
+++ b/src/libexpr/flake/flake.cc
@@ -359,7 +359,12 @@ LockedFlake lockFlake(
ancestors? */
auto i = overrides.find(inputPath);
bool hasOverride = i != overrides.end();
- if (hasOverride) overridesUsed.insert(inputPath);
+ if (hasOverride) {
+ overridesUsed.insert(inputPath);
+ // Respect the “flakeness” of the input even if we
+ // override it
+ i->second.isFlake = input2.isFlake;
+ }
auto & input = hasOverride ? i->second : input2;
/* Resolve 'follows' later (since it may refer to an input