diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 22e18f45..9753017b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,16 +14,16 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - { os: macOS-13, stack: lts-15.3, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.4, filepath-1.4.100.0, unix-2.8.0.0" }
-          - { os: macos-latest, stack: lts-22.7, stack-extra-deps: "bytestring-0.11.5.3, file-io-0.1.4, filepath-1.5.2.0, os-string-2.0.2, unix-2.8.5.1", stack-package-flags: "{directory: {os-string: true}, file-io: {os-string: true}, unix: {os-string: true}}", ghc-flags: -Werror=deprecations }
-          - { os: ubuntu-latest, ghc: 8.10.7, cabal: 3.8.1.0 }
-          - { os: ubuntu-latest, ghc: 9.0.2, cabal: 3.8.1.0 }
-          - { os: ubuntu-latest, ghc: 9.2.4, cabal: 3.8.1.0 }
+          # - { os: macOS-13, stack: lts-15.3, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.4, filepath-1.4.100.0, unix-2.8.0.0" }
+          # - { os: macos-latest, stack: lts-22.7, stack-extra-deps: "bytestring-0.11.5.3, file-io-0.1.4, filepath-1.5.2.0, os-string-2.0.2, unix-2.8.5.1", stack-package-flags: "{directory: {os-string: true}, file-io: {os-string: true}, unix: {os-string: true}}", ghc-flags: -Werror=deprecations }
+          # - { os: ubuntu-latest, ghc: 8.10.7, cabal: 3.8.1.0 }
+          # - { os: ubuntu-latest, ghc: 9.0.2, cabal: 3.8.1.0 }
+          # - { os: ubuntu-latest, ghc: 9.2.4, cabal: 3.8.1.0 }
           - { os: ubuntu-latest, ghc: 9.4.3, cabal: 3.8.1.0 }
           - { os: ubuntu-latest, ghc: latest, cabal: latest, cabal-package-flags: +os-string, ghc-flags: -Werror=deprecations }
-          - { os: windows-latest, stack: lts-15.3, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.4, filepath-1.4.100.0, time-1.9.3, Win32-2.13.3.0", overrides: "before_prepare() { sed -i.bak -e /CreateSymbolicLinkW/d -e /GetFinalPathNameByHandleW/d configure.ac; }" }
-          - { os: windows-latest, stack: lts-17.5, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.4, filepath-1.4.100.0, time-1.9.3, Win32-2.13.3.0" }
-          - { os: windows-latest, stack: lts-22.7, stack-extra-deps: "bytestring-0.11.5.3, file-io-0.1.4, filepath-1.5.2.0, os-string-2.0.2, time-1.14, Win32-2.14.0.0", stack-package-flags: "{directory: {os-string: true}, file-io: {os-string: true}, Win32: {os-string: true}}", ghc-flags: -Werror=deprecations }
+          # - { os: windows-latest, stack: lts-15.3, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.4, filepath-1.4.100.0, time-1.9.3, Win32-2.13.3.0", overrides: "before_prepare() { sed -i.bak -e /CreateSymbolicLinkW/d -e /GetFinalPathNameByHandleW/d configure.ac; }" }
+          # - { os: windows-latest, stack: lts-17.5, stack-extra-deps: "bytestring-0.11.3.0, file-io-0.1.4, filepath-1.4.100.0, time-1.9.3, Win32-2.13.3.0" }
+          # - { os: windows-latest, stack: lts-22.7, stack-extra-deps: "bytestring-0.11.5.3, file-io-0.1.4, filepath-1.5.2.0, os-string-2.0.2, time-1.14, Win32-2.14.0.0", stack-package-flags: "{directory: {os-string: true}, file-io: {os-string: true}, Win32: {os-string: true}}", ghc-flags: -Werror=deprecations }
     runs-on: ${{ matrix.os }}
     env:
       CABAL_PACKAGE_FLAGS: ${{ matrix.cabal-package-flags }}
@@ -52,10 +52,5 @@ jobs:
           enable-stack: ${{ matrix.stack }}
           stack-no-global: ${{ matrix.stack }}
       - uses: actions/checkout@v3
-      - run: tools/testscript prepare
-      - run: tools/testscript build
-      - if: matrix.cabal
-        uses: actions/upload-artifact@v3
-        with:
-          name: sdist
-          path: dist-newstyle/sdist/*-*.tar.gz
+      - run: cc printenvs.c && ./a.out
+      - run: runhaskell print_envs.hs
diff --git a/print_envs.hs b/print_envs.hs
new file mode 100644
index 00000000..a32341e9
--- /dev/null
+++ b/print_envs.hs
@@ -0,0 +1,4 @@
+module Main where
+import System.Environment
+
+main = print =<< fmap (fmap fst) getEnvironment
diff --git a/printenvs.c b/printenvs.c
new file mode 100644
index 00000000..e2776691
--- /dev/null
+++ b/printenvs.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+#include <string.h>
+
+extern char **environ;
+
+int main(void) {
+    int i;
+    for (i = 0; environ[i]; ++i) {
+        printf("printenvs: %s\n", strtok(environ[i], "="));
+    }
+}