diff options
| -rw-r--r-- | src/libexpr/primops.cc | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc index 9208f0b247a8..b85cdbadd88c 100644 --- a/src/libexpr/primops.cc +++ b/src/libexpr/primops.cc @@ -100,8 +100,14 @@ static Path copyAtom(EvalState & state, const Path & srcPath) Path drvPath = writeTerm(unparseStoreExpr(ne), "c"); + /* !!! can we get rid of drvRoots? */ state.drvRoots[drvPath] = ne.closure.roots; + /* Optimisation, but required in read-only mode! because in that + case we don't actually write store expressions, so we can't + read them later. */ + state.drvHashes[drvPath] = hashDerivationModulo(state, ne); + printMsg(lvlChatty, format("copied `%1%' -> closure `%2%'") % srcPath % drvPath); return drvPath; @@ -326,6 +332,11 @@ static Expr primDerivation(EvalState & state, const ATermVector & _args) printMsg(lvlChatty, format("instantiated `%1%' -> `%2%'") % drvName % drvPath); + /* Optimisation, but required in read-only mode! because in that + case we don't actually write store expressions, so we can't + read them later. */ + state.drvHashes[drvPath] = hashDerivationModulo(state, ne); + /* !!! assumes a single output */ attrs.set("outPath", makeAttrRHS(makePath(toATerm(outPath)), makeNoPos())); attrs.set("drvPath", makeAttrRHS(makePath(toATerm(drvPath)), makeNoPos())); |