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-rw-r--r--nix/libstore/derivations.cc16
1 files changed, 13 insertions, 3 deletions
diff --git a/nix/libstore/derivations.cc b/nix/libstore/derivations.cc
index d91e42784c..b452aa2caf 100644
--- a/nix/libstore/derivations.cc
+++ b/nix/libstore/derivations.cc
@@ -48,7 +48,7 @@ static Path parsePath(std::istream & str)
{
string s = parseString(str);
if (s.size() == 0 || s[0] != '/')
- throw Error(format("bad path `%1%' in derivation") % s);
+ throw FormatError(format("bad path `%1%' in derivation") % s);
return s;
}
@@ -62,7 +62,7 @@ static StringSet parseStrings(std::istream & str, bool arePaths)
}
-Derivation parseDerivation(const string & s)
+static Derivation parseDerivation(const string & s)
{
Derivation drv;
std::istringstream str(s);
@@ -112,6 +112,16 @@ Derivation parseDerivation(const string & s)
}
+Derivation readDerivation(const Path & drvPath)
+{
+ try {
+ return parseDerivation(readFile(drvPath));
+ } catch (FormatError & e) {
+ throw Error(format("error parsing derivation `%1%': %2%") % drvPath % e.msg());
+ }
+}
+
+
static void printString(string & res, const string & s)
{
res += '"';
@@ -240,7 +250,7 @@ Hash hashDerivationModulo(StoreAPI & store, Derivation drv)
Hash h = drvHashes[i->first];
if (h.type == htUnknown) {
assert(store.isValidPath(i->first));
- Derivation drv2 = parseDerivation(readFile(i->first));
+ Derivation drv2 = readDerivation(i->first);
h = hashDerivationModulo(store, drv2);
drvHashes[i->first] = h;
}