New Shelley Staging Environments and Testnet

default.nix

@@ -50,6 +50,11 @@ let
     inherit nixTools cardanoConfig gitrev;
     version = nixTools.nix-tools._raw.cardano-sl.identifier.version;
   };
+  explorerFrontend = pkgs.callPackage ./explorer/frontend {
+    inherit gitrev;
+    cardano-sl-explorer = nixTools.nix-tools.exes.cardano-sl-explorer;
+  };
+  faucetFrontend = pkgs.callPackage ./faucet/frontend { };
   # Currently the only acceptance tests here are to sync the wallet
   # against mainnet and testnet.
   acceptanceTests = let
@@ -62,6 +67,7 @@ let
     };
   in commonLib.forEnvironments mkTest;
 in {
-  inherit pkgs acceptanceTests daedalus-bridge tests cardanoConfig;
+  inherit pkgs acceptanceTests daedalus-bridge tests
+          cardanoConfig faucetFrontend explorerFrontend;
   inherit (nixTools) nix-tools;
 } // scripts

explorer/frontend/default.nix

@@ -6,6 +6,28 @@
 with import ../../lib.nix;
 
 let
+  # Removes files within a Haskell source tree which won't change the
+  # result of building the package.
+  # This is so that cached build products can be used whenever possible.
+  # It also applies the lib.cleanSource filter from nixpkgs which
+  # removes VCS directories, emacs backup files, etc.
+  cleanSourceTree = src:
+    if (builtins.typeOf src) == "path"
+      then cleanSourceWith {
+        filter = with pkgs.stdenv;
+          name: type: let baseName = baseNameOf (toString name); in ! (
+            # Filter out cabal build products.
+            baseName == "dist" || baseName == "dist-newstyle" ||
+            baseName == "cabal.project.local" ||
+            lib.hasPrefix ".ghc.environment" baseName ||
+            # Filter out stack build products.
+            lib.hasPrefix ".stack-work" baseName ||
+            # Filter out files which are commonly edited but don't
+            # affect the cabal build.
+            lib.hasSuffix ".nix" baseName
+          );
+        src = cleanSource src;
+      } else src;
   src = cleanSourceWith {
     src = cleanSourceTree ./.;
     filter = with stdenv;