save the stack cache earlier

.circleci/config.yml

@@ -92,6 +92,17 @@ jobs:
           # while to build.
           no_output_timeout: "20m"
 
+      - save_cache:
+          # We can save the stack cache right here.  It will have everything
+          # we want in it now that the dependencies have been built.  And this
+          # way we get to save the cache whether or not the test suite goes on
+          # to succeed.
+          name: "Cache Dependencies"
+          key: paymentserver-v1-{{ checksum "stack.yaml" }}-{{ checksum "PaymentServer.cabal" }}
+          paths:
+            - "/root/.stack"
+            - ".stack-work"
+
       - run:
           name: "Run Tests"
           command: |
@@ -125,13 +136,6 @@ jobs:
               --no-haddock-deps"
             nix-shell shell.nix --run "$BUILD"
 
-      - save_cache:
-          name: "Cache Dependencies"
-          key: paymentserver-v1-{{ checksum "stack.yaml" }}-{{ checksum "PaymentServer.cabal" }}
-          paths:
-            - "/root/.stack"
-            - ".stack-work"
-
       - save_cache:
           name: "Cache Nix Store Paths"
           key: paymentserver-nix-store-v1-{{ .Environment.NIXPKGS_REV }}