diff --git a/stack-ghc7.10.3.yaml b/stack-ghc7.10.3.yaml
index 6869d6572..08ed036f5 100644
--- a/stack-ghc7.10.3.yaml
+++ b/stack-ghc7.10.3.yaml
@@ -11,4 +11,9 @@ allow-newer: true
 
 flags:
   transformers-compat:
-    four: true
\ No newline at end of file
+    four: true
+#   gf:
+#     c-runtime: true
+#
+# extra-lib-dirs:
+#   - /usr/local/lib
diff --git a/stack-ghc8.0.2.yaml b/stack-ghc8.0.2.yaml
index af08206d9..f98141b0b 100644
--- a/stack-ghc8.0.2.yaml
+++ b/stack-ghc8.0.2.yaml
@@ -1 +1,7 @@
 resolver: lts-9.21 # ghc 8.0.2
+
+# flags:
+#   gf:
+#     c-runtime: true
+# extra-lib-dirs:
+#   - /usr/local/lib
diff --git a/stack-ghc8.2.2.yaml b/stack-ghc8.2.2.yaml
index c33c53b33..4fd9ce775 100644
--- a/stack-ghc8.2.2.yaml
+++ b/stack-ghc8.2.2.yaml
@@ -4,3 +4,9 @@ extra-deps:
 - cgi-3001.3.0.3
 - httpd-shed-0.4.0.3
 - exceptions-0.10.2
+
+# flags:
+#   gf:
+#     c-runtime: true
+# extra-lib-dirs:
+#   - /usr/local/lib
diff --git a/stack-ghc8.4.4.yaml b/stack-ghc8.4.4.yaml
index c1a68e2d5..c1f059090 100644
--- a/stack-ghc8.4.4.yaml
+++ b/stack-ghc8.4.4.yaml
@@ -2,3 +2,9 @@ resolver: lts-12.26 # ghc 8.4.4
 
 extra-deps:
 - cgi-3001.3.0.3
+
+# flags:
+#   gf:
+#     c-runtime: true
+# extra-lib-dirs:
+#   - /usr/local/lib
diff --git a/stack-ghc8.6.5.yaml b/stack-ghc8.6.5.yaml
index 2e66c7bf6..1895acca0 100644
--- a/stack-ghc8.6.5.yaml
+++ b/stack-ghc8.6.5.yaml
@@ -4,3 +4,9 @@ extra-deps:
 - network-2.6.3.6
 - httpd-shed-0.4.0.3
 - cgi-3001.5.0.0
+
+# flags:
+#   gf:
+#     c-runtime: true
+# extra-lib-dirs:
+#   - /usr/local/lib
diff --git a/stack-ghc8.8.4.yaml b/stack-ghc8.8.4.yaml
index a62db170b..95c807937 100644
--- a/stack-ghc8.8.4.yaml
+++ b/stack-ghc8.8.4.yaml
@@ -7,3 +7,8 @@ extra-deps:
 - json-0.10@sha256:d9fc6b07ce92b8894825a17d2cf14799856767eb30c8bf55962baa579207d799,3210
 - multipart-0.2.0@sha256:b8770e3ff6089be4dd089a8250894b31287cca671f3d258190a505f9351fa8a9,1084
 
+# flags:
+#   gf:
+#     c-runtime: true
+# extra-lib-dirs:
+#   - /usr/local/lib
diff --git a/stack.yaml b/stack.yaml
index f5d21085c..69b8c8790 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,9 +1,16 @@
 # This default stack file is a copy of stack-ghc8.6.5.yaml
-# But committing a symlink is probably a bad idea, so it's a real copy
+# But committing a symlink can be problematic on Windows, so it's a real copy.
+# See: https://github.com/GrammaticalFramework/gf-core/pull/106
 
 resolver: lts-14.27 # ghc 8.6.5
 
 extra-deps:
 - network-2.6.3.6
 - httpd-shed-0.4.0.3
-- cgi-3001.5.0.0
\ No newline at end of file
+- cgi-3001.5.0.0
+
+# flags:
+#   gf:
+#     c-runtime: true
+# extra-lib-dirs:
+#   - /usr/local/lib