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nix build (and others): Force re-evaluation of cached errors

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Fixes #3872.

This is a bit hacky. Ideally we would automatically re-evaluate the
failed attribute iff we need to print the error message (so in
commands like 'nix search' we wouldn't re-evaluate because we're
suppressing errors).
This commit is contained in:
Eelco Dolstra 2020-08-07 14:46:00 +02:00
parent 2ffc058950
commit 3c75ddc16b
2 changed files with 14 additions and 9 deletions
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6
src/libexpr/eval-cache.hh
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@ -9,6 +9,8 @@
namespace nix::eval_cache {
MakeError(CachedEvalError, EvalError);
class AttrDb;
class AttrCursor;
@ -92,11 +94,11 @@ public:
std::string getAttrPathStr(Symbol name) const;
std::shared_ptr<AttrCursor> maybeGetAttr(Symbol name);
std::shared_ptr<AttrCursor> maybeGetAttr(Symbol name, bool forceErrors = false);
std::shared_ptr<AttrCursor> maybeGetAttr(std::string_view name);
std::shared_ptr<AttrCursor> getAttr(Symbol name);
std::shared_ptr<AttrCursor> getAttr(Symbol name, bool forceErrors = false);
std::shared_ptr<AttrCursor> getAttr(std::string_view name);