Support Python >= 3.8

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.10', '3.11', '3.12']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
 
     steps:
     - uses: actions/checkout@v4

.github/workflows/formatting-and-pyright.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.10']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
 
     steps:
     - uses: actions/checkout@v4

filecheck/matcher.py

@@ -370,15 +370,14 @@ def _approximate_uop_length(self, uops: Sequence[UOp]) -> int:
         """
         count = 0
         for op in uops:
-            match op:
-                case Subst(variable):
-                    count += len(str(self.ctx.live_variables.get(variable, "")))
-                case Literal(content):
-                    count += len(content)
-                case RE(content):
-                    count += len(content)
-                case Capture(pattern):
-                    count += len(pattern)
-                case _:
-                    continue
+            if isinstance(op, Subst):
+                count += len(str(self.ctx.live_variables.get(op.variable, "")))
+            elif isinstance(op, Literal):
+                count += len(op.content)
+            elif isinstance(op, RE):
+                count += len(op.content)
+            elif isinstance(op, Capture):
+                count += len(op.pattern)
+            else:
+                continue
         return count

filecheck/ops.py

@@ -1,13 +1,13 @@
 from __future__ import annotations
 
 from dataclasses import dataclass, field
-from typing import Callable, TypeAlias
+from typing import Callable
 
 from filecheck.options import Options
 
 OP_KINDS = ("DAG", "COUNT", "NOT", "EMPTY", "NEXT", "SAME", "LABEL", "CHECK")
 
-VALUE_MAPPER_T: TypeAlias = Callable[[str], int] | Callable[[str], str]
+VALUE_MAPPER_T = Callable[[str], int] | Callable[[str], str]
 
 
 @dataclass(slots=True)

pyproject.toml

@@ -14,12 +14,12 @@ packages = [
 ]
 
 [tool.poetry.dependencies]
-python = "^3.10"
+python = "^3.8"
 
 [tool.poetry.group.dev.dependencies]
 black = "^24.4.2"
 lit = "^18.1.8"
-pre-commit = "^3.7.1"
+pre-commit = { version = "^3.7.1", python = "^3.9" }
 pyright = "^1.1.370"
 pytest = "^8.2.2"