* Refactoring: move the user environment stuff into its own module.

src/nix-env/user-env.cc

@@ -0,0 +1,28 @@
+#include "util.hh"
+#include "get-drvs.hh"
+
+
+namespace nix {
+
+
+DrvInfos queryInstalled(EvalState & state, const Path & userEnv)
+{
+    Path path = userEnv + "/manifest";
+
+    if (!pathExists(path))
+        return DrvInfos(); /* not an error, assume nothing installed */
+
+    throw Error("not implemented");
+#if 0
+    Expr e = ATreadFromNamedFile(path.c_str());
+    if (!e) throw Error(format("cannot read Nix expression from `%1%'") % path);
+
+    DrvInfos elems;
+    // !!! getDerivations(state, e, "", ATermMap(1), elems);
+    return elems;
+#endif
+}
+
+
+}
+