revert: "chore: remove ruff target-version" (#32895)

Reverts langchain-ai/langchain#32880

Not needed at the moment, will do when finishing v1

libs/cli/pyproject.toml

@@ -39,6 +39,9 @@ test_integration = []
 langchain-core = { path = "../core", editable = true }
 langchain = { path = "../langchain", editable = true }
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.format]
 docstring-code-format = true
 

libs/core/pyproject.toml

@@ -73,6 +73,9 @@ disallow_any_generics = false
 warn_return_any = false
 
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.format]
 docstring-code-format = true
 

libs/langchain/pyproject.toml

@@ -120,6 +120,7 @@ langchain-text-splitters = { path = "../text-splitters", editable = true }
 langchain-openai = { path = "../partners/openai", editable = true }
 
 [tool.ruff]
+target-version = "py39"
 exclude = ["tests/integration_tests/examples/non-utf8-encoding.py"]
 
 [tool.mypy]

libs/langchain_v1/pyproject.toml

@@ -83,6 +83,7 @@ langchain-text-splitters = { path = "../text-splitters", editable = true }
 langchain-openai = { path = "../partners/openai", editable = true }
 
 [tool.ruff]
+target-version = "py310"
 exclude = ["tests/integration_tests/examples/non-utf8-encoding.py"]
 line-length = 100
 

libs/partners/anthropic/pyproject.toml

@@ -56,6 +56,9 @@ langchain-tests = { path = "../../standard-tests", editable = true }
 disallow_untyped_defs = "True"
 plugins = ['pydantic.mypy']
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/chroma/pyproject.toml

@@ -58,6 +58,9 @@ langchain-tests = { path = "../../standard-tests", editable = true }
 [tool.mypy]
 disallow_untyped_defs = true
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/deepseek/pyproject.toml

@@ -45,6 +45,9 @@ langchain-tests = { path = "../../standard-tests", editable = true }
 [tool.mypy]
 disallow_untyped_defs = "True"
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/exa/pyproject.toml

@@ -44,6 +44,9 @@ langchain-core = { path = "../../core", editable = true }
 [tool.mypy]
 disallow_untyped_defs = "True"
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/fireworks/pyproject.toml

@@ -48,6 +48,9 @@ langchain-tests = { path = "../../standard-tests", editable = true }
 [tool.mypy]
 disallow_untyped_defs = "True"
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/groq/pyproject.toml

@@ -40,6 +40,9 @@ langchain-tests = { path = "../../standard-tests", editable = true }
 [tool.mypy]
 disallow_untyped_defs = "True"
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/huggingface/pyproject.toml

@@ -54,6 +54,9 @@ langchain-tests = { path = "../../standard-tests", editable = true }
 [tool.mypy]
 disallow_untyped_defs = "True"
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/mistralai/pyproject.toml

@@ -44,6 +44,9 @@ langchain-tests = { path = "../../standard-tests", editable = true }
 [tool.mypy]
 disallow_untyped_defs = "True"
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/nomic/pyproject.toml

@@ -40,6 +40,9 @@ dev = ["langchain-core"]
 [tool.uv.sources]
 langchain-core = { path = "../../core", editable = true }
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/ollama/pyproject.toml

@@ -42,6 +42,9 @@ langchain-tests = { path = "../../standard-tests", editable = true }
 [tool.mypy]
 disallow_untyped_defs = "True"
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/openai/pyproject.toml

@@ -60,6 +60,9 @@ disallow_untyped_defs = "True"
 module = "transformers"
 ignore_missing_imports = true
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = ["E", "F", "I", "T201", "UP", "S"]
 ignore = [ "UP007", "UP045" ]

libs/partners/perplexity/pyproject.toml

@@ -55,6 +55,9 @@ plugins = ['pydantic.mypy']
 module = "transformers"
 ignore_missing_imports = true
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = ["E", "F", "I", "T201", "UP", "S"]
 ignore = [ "UP007", "UP045"]

libs/partners/prompty/pyproject.toml

@@ -45,6 +45,9 @@ langchain-core = { path = "../../core", editable = true }
 langchain-text-splitters = { path = "../../text-splitters", editable = true }
 langchain = { path = "../../langchain", editable = true }
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = ["E", "F", "I", "T201", "UP", "S"]
 ignore = [ "UP007", "UP045" ]

libs/partners/qdrant/pyproject.toml

@@ -47,6 +47,9 @@ typing = ["mypy<2.0,>=1.10", "simsimd<7.0.0,>=6.0.0", "langchain-core"]
 [tool.uv.sources]
 langchain-core = { path = "../../core", editable = true }
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/partners/xai/pyproject.toml

@@ -50,6 +50,9 @@ langchain-openai = { path = "../openai", editable = true }
 [tool.mypy]
 disallow_untyped_defs = "True"
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.lint]
 select = [
     "A",      # flake8-builtins

libs/standard-tests/pyproject.toml

@@ -55,6 +55,9 @@ disallow_any_generics = false
 module = ["vcr.*",]
 ignore_missing_imports = true
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.format]
 docstring-code-format = true
 

libs/text-splitters/pyproject.toml

@@ -63,6 +63,9 @@ warn_unreachable = true
 module = ["konlpy", "nltk",]
 ignore_missing_imports = true
 
+[tool.ruff]
+target-version = "py39"
+
 [tool.ruff.format]
 docstring-code-format = true