src/Hydra/lib/Hydra/Base/Controller/Nix.pm

@@ -21,6 +21,21 @@ sub closure : Chained('nix') PathPart {
 sub manifest : Chained('nix') PathPart Args(0) {
     my ($self, $c) = @_;
     $c->stash->{current_view} = 'Hydra::View::NixManifest';
+    $c->stash->{narBase} = $c->uri_for($self->action_for("nar"), $c->req->captures);
+}
+
+
+sub nar : Chained('nix') PathPart {
+    my ($self, $c, @rest) = @_;
+
+    my $path .= "/" . join("/", @rest);
+
+    error($c, "Path " . $path . " is no longer available.") unless isValidPath($path);
+
+    # !!! check that $path is in the closure of $c->stash->{storePaths}.
+
+    $c->stash->{current_view} = 'Hydra::View::NixNAR';
+    $c->stash->{storePath} = $path;
 }
 
 

src/Hydra/lib/Hydra/Controller/Root.pm

@@ -562,18 +562,6 @@ sub nixpkg :Local {
 }
 
 
-sub nar :Local {
-    my ($self, $c, @rest) = @_;
-
-    my $path .= "/" . join("/", @rest);
-
-    error($c, "Path " . $path . " is no longer available.") unless isValidPath($path);
-
-    $c->stash->{current_view} = 'Hydra::View::NixNAR';
-    $c->stash->{storePath} = $path;
-}
-
-
 sub end : ActionClass('RenderView') {
     my ($self, $c) = @_;
 

src/Hydra/lib/Hydra/View/NixManifest.pm

@@ -37,7 +37,7 @@ sub process {
             or die "cannot query hash of `$path': $?";
         chomp $hash;
 
-        my $url = $c->uri_for('/nar' . $path);
+        my $url = $c->stash->{narBase} . $path;
 
         my $deriver = `nix-store --query --deriver $path`
             or die "cannot query deriver of `$path': $?";