Detect trivial cases of ==/!= as well

Author: mgorny

conda_forge_tick/migrators/recipe_v1.py

@@ -31,12 +31,20 @@ def is_negated_condition(a: str, b: str) -> bool:
     if not all(map(is_single_expression, (a, b))):
         return False
 
+    # X <-> not X
     a_not = a.startswith("not")
     b_not = b.startswith("not")
-    return (
+    if (
         a_not != b_not
         and a.removeprefix("not").lstrip() == b.removeprefix("not").lstrip()
-    )
+    ):
+        return True
+
+    # A == B <-> A != B
+    if a == b.replace("==", "!=") or a == b.replace("!=", "=="):
+        return True
+
+    return False
 
 
 def fold_branch(source: Any, dest: Any, branch: str, dest_branch: str) -> None:

tests/test_v1_yaml/version_pytorch_correct.yaml

@@ -149,8 +149,7 @@ outputs:
           else:
             - pytorch-gpu ==${{ version }}
             - pytorch-cpu ==99999999
-        - if: "cuda_compiler_version != \"None\""
-          then: pytorch =${{ version }} cuda${{ cuda_compiler_version | replace('.', '') }}_${{ blas_impl }}_*_${{ build }}
+            - pytorch =${{ version }} cuda${{ cuda_compiler_version | replace('.', '') }}_${{ blas_impl }}_*_${{ build }}
         - if: "unix and blas_impl != \"mkl\""
           then: openblas * openmp_*
 
@@ -225,9 +224,9 @@ outputs:
           then:
             - mkl-devel ${{ mkl }}
             - libcblas * *_mkl
-          else: libcblas
-        - if: "blas_impl != \"mkl\""
-          then: liblapack
+          else:
+            - libcblas
+            - liblapack
         - if: not win
           then: llvm-openmp
           else: intel-openmp ${{ mkl }}
@@ -252,9 +251,7 @@ outputs:
           else: intel-openmp ${{ mkl }}
         - if: "blas_impl == \"mkl\""
           then: libblas * *${{ blas_impl }}
-        - if: "blas_impl != \"mkl\""
-          then: nomkl
-        # GPU requirements without run_exports
+          else: nomkl
         - if: "cuda_compiler_version != \"None\""
           then: ${{ pin_compatible('cudnn') }}
         - if: "cuda_compiler_version != \"None\" and not win"