ci: we don't actually need postgresql-simple on Windows

Author: thomasjm

.github/workflows/sandwich.yml

@@ -100,13 +100,6 @@ jobs:
       run: |
         "$env:PGBIN" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
 
-        # Install alternative pkgconf to make postgresql-libpq-configure work
-        vcpkg install pkgconf:x64-windows
-        $pkgconfPath = "$env:VCPKG_INSTALLATION_ROOT\installed\x64-windows\tools\pkgconf"
-        Copy-Item "$pkgconfPath\pkgconf.exe" "$pkgconfPath\pkg-config.exe"
-        # Prepend to PATH so it's found before Strawberry Perl's version
-        echo "$pkgconfPath" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
-
     - name: Install dependencies (macOS)
       if: runner.os == 'macOS'
       run: |

sandwich-contexts/package.yaml

@@ -87,8 +87,11 @@ tests:
     - -threaded
     dependencies:
     - filepath
-    - postgresql-simple
     - relude
     - sandwich-contexts
     - string-interpolate
     build-tools: sandwich:sandwich-discover
+    when:
+    - condition: "!os(windows)"
+      dependencies:
+      - postgresql-simple

sandwich-contexts/sandwich-contexts.cabal

@@ -1,6 +1,6 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.38.0.
+-- This file has been generated from package.yaml by hpack version 0.38.1.
 --
 -- see: https://github.com/sol/hpack
 
@@ -115,10 +115,12 @@ test-suite tests
   build-depends:
       base >=4.11 && <5
     , filepath
-    , postgresql-simple
     , relude
     , sandwich >=0.3.0.0
     , sandwich-contexts
     , string-interpolate
     , unliftio
   default-language: Haskell2010
+  if !os(windows)
+    build-depends:
+        postgresql-simple