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-rw-r--r--tvix/eval/src/tests/tvix_tests/eval-okay-nix-version-cmp.exp1
-rw-r--r--tvix/eval/src/tests/tvix_tests/eval-okay-nix-version-cmp.nix5
2 files changed, 6 insertions, 0 deletions
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-nix-version-cmp.exp b/tvix/eval/src/tests/tvix_tests/eval-okay-nix-version-cmp.exp
new file mode 100644
index 000000000000..3a2e3f4984a0
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-nix-version-cmp.exp
@@ -0,0 +1 @@
+-1
diff --git a/tvix/eval/src/tests/tvix_tests/eval-okay-nix-version-cmp.nix b/tvix/eval/src/tests/tvix_tests/eval-okay-nix-version-cmp.nix
new file mode 100644
index 000000000000..6f353056127c
--- /dev/null
+++ b/tvix/eval/src/tests/tvix_tests/eval-okay-nix-version-cmp.nix
@@ -0,0 +1,5 @@
+# nixpkgs checks against the `builtins.nixVersion` and fails if it
+# doesn't like what it sees. To work around this we have a "user-agent
+# style" version (see cl/6858) that ensures compatibility.
+
+builtins.compareVersions "2.3" builtins.nixVersion