Add separate stack.yaml to not redownload GHC

test/expected-compile-failures/stack-8.2.yaml

@@ -0,0 +1,14 @@
+resolver: lts-10.6
+
+extra-deps:
+- persistent-2.8.1
+- persistent-mysql-2.8.1
+- persistent-postgresql-2.8.1
+- persistent-sqlite-2.8.1
+- conduit-1.3.0
+- conduit-extra-1.3.0
+- resourcet-1.2.0
+
+packages:
+- .
+- ../../../esqueleto

test/expected-compile-failures/stack-8.4.yaml

@@ -0,0 +1,5 @@
+resolver: lts-12.24
+
+packages:
+- .
+- ../../../esqueleto

test/expected-compile-failures/stack-8.6.yaml

@@ -0,0 +1,11 @@
+resolver: nightly-2018-12-18
+
+extra-deps:
+- persistent-postgresql-2.8.2.0
+- postgresql-simple-0.5.4.0
+
+allow-newer: true
+
+packages:
+- .
+- ../../../esqueleto

test/expected-compile-failures/test.sh

@@ -1,5 +1,7 @@
 #!/bin/env bash
 
-STACK_YAML=stack.yaml
-
-stack build --fast expected-compile-failures:exe:write-with-read-role && exit 1
+if stack build --fast expected-compile-failures:exe:write-with-read-role; then
+    exit 1
+else
+    exit 0
+fi