nix-env: Install all outputs of a derivation

If you explicitly install a package, presumably you want all of it.
So symlink all outputs in the user environment.

1 files changed, 25 insertions, 10 deletions

diff --git a/src/nix-env/user-env.cc b/src/nix-env/user-env.cc
index 0a50493fd153..727c4bd44d69 100644
--- a/src/nix-env/user-env.cc
+++ b/src/nix-env/user-env.cc
@@ -54,21 +54,42 @@ bool createUserEnv(EvalState & state, DrvInfos & elems,
     unsigned int n = 0;
     foreach (DrvInfos::iterator, i, elems) {
         /* Create a pseudo-derivation containing the name, system,
-           output path, and optionally the derivation path, as well as
-           the meta attributes. */
+           output paths, and optionally the derivation path, as well
+           as the meta attributes. */
         Path drvPath = keepDerivations ? i->queryDrvPath(state) : "";
 
         Value & v(*state.allocValue());
         manifest.list.elems[n++] = &v;
-        state.mkAttrs(v, 8);
+        state.mkAttrs(v, 16);
 
         mkString(*state.allocAttr(v, state.sType), "derivation");
         mkString(*state.allocAttr(v, state.sName), i->name);
-        mkString(*state.allocAttr(v, state.sSystem), i->system);
+        if (!i->system.empty())
+            mkString(*state.allocAttr(v, state.sSystem), i->system);
         mkString(*state.allocAttr(v, state.sOutPath), i->queryOutPath(state));
         if (drvPath != "")
             mkString(*state.allocAttr(v, state.sDrvPath), i->queryDrvPath(state));
 
+        // Copy each output.
+        DrvInfo::Outputs outputs = i->queryOutputs(state);
+        Value & vOutputs = *state.allocAttr(v, state.sOutputs);
+        state.mkList(vOutputs, outputs.size());
+        unsigned int m = 0;
+        foreach (DrvInfo::Outputs::iterator, j, outputs) {
+            mkString(*(vOutputs.list.elems[m++] = state.allocValue()), j->first);
+            Value & vOutputs = *state.allocAttr(v, state.symbols.create(j->first));
+            state.mkAttrs(vOutputs, 2);
+            mkString(*state.allocAttr(vOutputs, state.sOutPath), j->second);
+
+            /* This is only necessary when installing store paths, e.g.,
+               `nix-env -i /nix/store/abcd...-foo'. */
+            store->addTempRoot(j->second);
+            store->ensurePath(j->second);
+
+            references.insert(j->second);
+        }
+
+        // Copy the meta attributes.
         Value & vMeta = *state.allocAttr(v, state.sMeta);
         state.mkAttrs(vMeta, 16);
 
@@ -95,12 +116,6 @@ bool createUserEnv(EvalState & state, DrvInfos & elems,
         vMeta.attrs->sort();
         v.attrs->sort();
 
-        /* This is only necessary when installing store paths, e.g.,
-           `nix-env -i /nix/store/abcd...-foo'. */
-        store->addTempRoot(i->queryOutPath(state));
-        store->ensurePath(i->queryOutPath(state));
-
-        references.insert(i->queryOutPath(state));
         if (drvPath != "") references.insert(drvPath);
     }