1 files changed, 29 insertions, 0 deletions
diff --git a/src/nix-env/names.hh b/src/nix-env/names.hh
new file mode 100644
index 000000000000..0fc9b57d0741
--- /dev/null
+++ b/src/nix-env/names.hh
@@ -0,0 +1,29 @@
+#ifndef __NAMES_H
+#define __NAMES_H
+
+#include <string>
+#include <list>
+
+#include "util.hh"
+
+
+struct DrvName
+{
+    string fullName;
+    string name;
+    string version;
+    unsigned int hits;
+
+    DrvName(const string & s);
+    bool matches(DrvName & n);
+};
+
+
+typedef list<DrvName> DrvNames;
+
+
+int compareVersions(const string & v1, const string & v2);
+DrvNames drvNamesFromArgs(const Strings & opArgs);
+
+
+#endif /* !__NAMES_H */