Add a test for the “two glibc” issue

thufschmitt · thufschmitt · commit 9c4ab7d7d3f0 · 2021-05-19T13:35:46.000+02:00
diff --git a/tests/ca/duplicate-realisation-in-closure.sh b/tests/ca/duplicate-realisation-in-closure.sh
@@ -0,0 +1,16 @@
+source ./common.sh
+
+sed -i 's/experimental-features .*/& ca-derivations ca-references/' "$NIX_CONF_DIR"/nix.conf
+
+export REMOTE_STORE_DIR="$TEST_ROOT/remote_store"
+export REMOTE_STORE="file://$REMOTE_STORE_DIR"
+
+rm -rf $REMOTE_STORE_DIR
+clearStore
+
+nix copy --to "$REMOTE_STORE" -f nondeterministic.nix dep1
+clearStore
+sleep 2 # To make sure that `$(date)` will be different
+nix build -f nondeterministic.nix dep2
+nix build --substituters "$REMOTE_STORE" -f nondeterministic.nix dep1 --no-require-sigs
+nix build -f nondeterministic.nix toplevel
diff --git a/tests/ca/nondeterministic.nix b/tests/ca/nondeterministic.nix
@@ -0,0 +1,35 @@
+with import ./config.nix;
+
+let mkCADerivation = args: mkDerivation ({
+    __contentAddressed = true;
+    outputHashMode = "recursive";
+    outputHashAlgo = "sha256";
+} // args);
+in
+
+rec {
+  currentTime = mkCADerivation {
+    name = "current-time";
+    buildCommand = ''
+      mkdir $out
+      echo $(date) > $out/current-time
+    '';
+  };
+  dep = seed: mkCADerivation {
+    name = "dep";
+    inherit seed;
+    buildCommand = ''
+      echo ${currentTime} > $out
+    '';
+  };
+  dep1 = dep 1;
+  dep2 = dep 2;
+  toplevel = mkCADerivation {
+    name = "toplevel";
+    buildCommand = ''
+      test ${dep1} == ${dep2}
+      touch $out
+    '';
+  };
+}
+
diff --git a/tests/local.mk b/tests/local.mk
@@ -44,6 +44,7 @@ nix_tests = \
   build.sh \
   compute-levels.sh \
   ca/build.sh \
+  ca/duplicate-realisation-in-closure.sh \
   ca/substitute.sh \
   ca/signatures.sh \
   ca/nix-run.sh \
