[ fix ] a file I had inadvertently deleted

gallais · gallais · commit 5b3612581df6 · 2021-02-08T22:50:40.000Z
I messed up earlier today and this was missing.
diff --git a/stack-8.10.4.yaml b/stack-8.10.4.yaml
@@ -0,0 +1,10 @@
+resolver: ghc-8.10.4
+compiler: ghc-8.10.4
+compiler-check: match-exact
+
+extra-deps:
+  - filemanip-0.3.6.3
+  - unix-compat-0.5.2
+
+packages:
+- '.'
