commercialhaskell · mpilgrem · Jul 5, 2026 · Jul 5, 2026
diff --git a/stack-ghc-9.12.4.yaml b/stack-ghc-9.12.4.yaml
@@ -1,6 +1,7 @@
 # This is an experimental project-level configuration, to see if Stack can be
 # built with GHC 9.12.4.
 snapshot: nightly-2026-07-02 # GHC 9.12.4
+compiler-check: match-exact # Protect against RCs of GHC 9.12.5
 
 extra-deps:
 # nightly-2026-07-02 specifies Cabal-3.14.2.0
@@ -18,8 +19,8 @@ docker:
 nix:
   # --nix on the command-line to enable.
   packages:
+  - pkg-config
   - zlib
-  - unzip
 
 flags:
   stack:

diff --git a/stack-ghc-9.12.5.yaml b/stack-ghc-9.12.5.yaml
@@ -22,8 +22,8 @@ docker:
 nix:
   # --nix on the command-line to enable.
   packages:
+  - pkg-config
   - zlib
-  - unzip
 
 flags:
   stack:

diff --git a/stack-ghc-9.14.1.yaml b/stack-ghc-9.14.1.yaml
@@ -19,8 +19,8 @@ docker:
 nix:
   # --nix on the command-line to enable.
   packages:
+  - pkg-config
   - zlib
-  - unzip
 
 flags:
   stack:

diff --git a/stack.yaml b/stack.yaml
@@ -62,8 +62,8 @@ docker:
 nix:
   # --nix on the command-line to enable.
   packages:
+  - pkg-config
   - zlib
-  - unzip
 
 flags:
   stack:
-Original file line number
+Diff line change
@@ Expand Up / @@ -22,8 +22,8 @@ docker: @@
     nix:
       # --nix on the command-line to enable.
       packages:
+      - pkg-config
       - zlib
-      - unzip
     flags:
       stack:
@@ Expand Down @@