add a failing pixi env

Author: keewis

.github/workflows/ci.yml

@@ -81,6 +81,10 @@ jobs:
             manifest-path: "envs/pixi.toml"
             policy-file: "policy.yaml"
             expected-failure: "false"
+          - envs: "pixi:failing-env"
+            manifest-path: "envs/pixi.toml"
+            policy-file: "policy.yaml"
+            expected-failure: "true"
 
     steps:
       - name: clone the repository

envs/pixi.toml

@@ -1,5 +1,4 @@
 [dependencies]
-numpy = "1.24"
 pandas = "2.1"
 packaging = "23.1"
 
@@ -9,6 +8,11 @@ python = "3.10"
 [feature.py311.dependencies]
 python = "3.11"
 
+[feature.failing.dependencies]
+numpy = "2.1"
+
+
 [environments]
 env1 = { features = ["py310"] }
 env2 = ["py311"]
+failing-env = { features = ["failing"] }