Enable check phases

release.nix

@@ -4,7 +4,7 @@ let
   ovni = <ovni>;
   nodes = <nodes>;
 
-  getVersion = x: toString (x.shortRev or x.dirtyShortRev or x.lastModified or "unknown");
+  getVersion = x: toString (x.shortRev or x.dirtyShortRev or x.lastModified or "master");
 
   pkgs = (
     import <bscpkgs> {
@@ -13,16 +13,24 @@ let
           nosv = prev.nosv.overrideAttrs (old: {
             src = nosv;
             version = getVersion nosv;
+
+            doCheck = true;
+            requiredSystemFeatures = [ "nosv" ];
           });
 
           ovni = prev.ovni.overrideAttrs (old: {
             src = ovni;
             version = getVersion ovni;
+
+            doCheck = true;
           });
 
           nodes = prev.nodes.overrideAttrs (old: {
             src = nodes;
             version = getVersion nodes;
+
+            doCheck = true;
+            requiredSystemFeatures = [ "nosv" ];
           });
         })
       ];