Migrate to published license-header package

poe_tasks.toml

@@ -1,17 +1,5 @@
 #:schema https://json.schemastore.org/partial-poe.json
 
-[tasks.add-license-header]
-help = "Add license header to all source files"
-cmd = """
-go run github.com/bufbuild/buf/private/pkg/licenseheader/cmd/license-header@v1.69.0
-    --ignore .github --ignore buf.yaml
-    --ignore buf.gen.yaml
-    --ignore test/conformance/nonconforming.yaml
-    --license-type apache
-    --copyright-holder "Buf Technologies, Inc."
-    --year-range "2023-2026"
-"""
-
 [tasks.bench]
 help = "Run benchmarks"
 cmd = "pytest --benchmark-enable --benchmark-only --benchmark-autosave"
@@ -36,7 +24,7 @@ sequence = [
   "generate-cel",
   "generate-protovalidate",
   "generate-test",
-  "add-license-header",
+  "format-license-header",
   "format-protos",
 ]
 
@@ -59,9 +47,13 @@ sequence = [
   "format-python",
   "format-protos",
   "format-toml",
-  "add-license-header"
+  "format-license-header"
 ]
 
+[tasks.format-license-header]
+help = "Add/update license headers in source files"
+cmd = "license-header"
+
 [tasks.format-protos]
 help = "Apply auto-formatting to protobuf files"
 sequence = [
@@ -86,9 +78,14 @@ sequence = [
   "lint-python",
   "lint-protos",
   "lint-toml",
+  "lint-license-header",
   { cmd = "uv lock --check" }
 ]
 
+[tasks.lint-license-header]
+help = "Check license headers in source files"
+cmd = "license-header --check"
+
 [tasks.lint-protos]
 help = "Apply linting to protobuf files"
 sequence = [

proto/buf/validate/validate.proto

@@ -1,10 +1,10 @@
-// Copyright 2023-2026 Buf Technologies, Inc.
+// Copyright (c) 2025-2026 Buf Technologies, Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
-//      http://www.apache.org/licenses/LICENSE-2.0
+//     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,

protovalidate/__init__.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

protovalidate/internal/__init__.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

protovalidate/internal/cel_field_presence.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

protovalidate/internal/extra_func.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

protovalidate/internal/legacy.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

protovalidate/internal/rules.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

protovalidate/internal/string_format.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

protovalidate/validator.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

pyproject.toml

@@ -41,6 +41,7 @@ dev = [
   "buf-bin==1.71.0",
   "fix-protobuf-imports==0.1.7",
   "google-re2-stubs==0.1.1",
+  "license-header==0.0.1",
   "poethepoet==0.48.0",
   "pytest==9.1.1",
   "pytest-benchmark==5.2.3",
@@ -65,6 +66,17 @@ build-backend = "hatchling.build"
 source = "vcs"
 raw-options = { fallback_version = "0.0.0" }
 
+## License headers
+[tool.licenseheader]
+copyright-holder = "Buf Technologies, Inc."
+year-range = "2025-2026"
+ignore = [
+  ".github",
+  "buf.yaml",
+  "buf.gen.yaml",
+  "test/conformance/nonconforming.yaml",
+]
+
 [tool.pytest]
 addopts = [
   "--benchmark-disable",

scripts/generate_cel.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

scripts/generate_protovalidate.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

test/__init__.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

test/conformance/__init__.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

test/conformance/runner.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,

test/conformance/test_conformance.py

@@ -1,10 +1,10 @@
-# Copyright 2023-2026 Buf Technologies, Inc.
+# Copyright (c) 2025-2026 Buf Technologies, Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
-#      http://www.apache.org/licenses/LICENSE-2.0
+#     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,