diff --git a/changelog.d/12455.misc b/changelog.d/12455.misc
new file mode 100644
index 0000000000..9b19945673
--- /dev/null
+++ b/changelog.d/12455.misc
@@ -0,0 +1 @@
+Reintroduce the list of targets to the linter script, to avoid linting unwanted local-only directories during development.
diff --git a/docs/code_style.md b/docs/code_style.md
index ebda6dcc85..db7edcd76b 100644
--- a/docs/code_style.md
+++ b/docs/code_style.md
@@ -6,60 +6,36 @@ The Synapse codebase uses a number of code formatting tools in order to
quickly and automatically check for formatting (and sometimes logical)
errors in code.
-The necessary tools are detailed below.
+The necessary tools are:
-First install them with:
+- [black](https://black.readthedocs.io/en/stable/), a source code formatter;
+- [isort](https://pycqa.github.io/isort/), which organises each file's imports;
+- [flake8](https://flake8.pycqa.org/en/latest/), which can spot common errors; and
+- [mypy](https://mypy.readthedocs.io/en/stable/), a type checker.
+
+Install them with:
```sh
pip install -e ".[lint,mypy]"
```
-- **black**
-
- The Synapse codebase uses [black](https://pypi.org/project/black/)
- as an opinionated code formatter, ensuring all comitted code is
- properly formatted.
-
- Have `black` auto-format your code (it shouldn't change any
- functionality) with:
-
- ```sh
- black .
- ```
-
-- **flake8**
-
- `flake8` is a code checking tool. We require code to pass `flake8`
- before being merged into the codebase.
-
- Check all application and test code with:
+The easiest way to run the lints is to invoke the linter script as follows.
- ```sh
- flake8 .
- ```
-
-- **isort**
-
- `isort` ensures imports are nicely formatted, and can suggest and
- auto-fix issues such as double-importing.
-
- Auto-fix imports with:
-
- ```sh
- isort .
- ```
+```sh
+scripts-dev/lint.sh
+```
It's worth noting that modern IDEs and text editors can run these tools
automatically on save. It may be worth looking into whether this
functionality is supported in your editor for a more convenient
-development workflow. It is not, however, recommended to run `flake8` on
-save as it takes a while and is very resource intensive.
+development workflow. It is not, however, recommended to run `flake8` or `mypy`
+on save as they take a while and can be very resource intensive.
## General rules
- **Naming**:
- - Use camel case for class and type names
- - Use underscores for functions and variables.
+ - Use `CamelCase` for class and type names
+ - Use underscores for `function_names` and `variable_names`.
- **Docstrings**: should follow the [google code
style](https://google.github.io/styleguide/pyguide.html#38-comments-and-docstrings).
See the
diff --git a/scripts-dev/lint.sh b/scripts-dev/lint.sh
index 4698d2d5be..91a704d982 100755
--- a/scripts-dev/lint.sh
+++ b/scripts-dev/lint.sh
@@ -79,8 +79,20 @@ else
# If we were not asked to lint changed files, and no paths were found as a result,
# then lint everything!
if [[ -z ${files+x} ]]; then
- # Lint all source code files and directories
- files=( "." )
+ # CI runs each linter on the entire checkout, e.g. `black .`. So don't
+ # rely on this list to *find* lint targets if that misses a file; instead;
+ # use it to exclude files from linters when this can't be done by config.
+ #
+ # To check which files the linters examine, use:
+ # black --verbose . 2>&1 | \grep -v ignored
+ # isort --show-files .
+ # flake8 --verbose . # This isn't a great option
+ # mypy has explicit config in mypy.ini; there is also mypy --verbose
+ files=(
+ "synapse" "docker" "tests"
+ "scripts-dev"
+ "contrib" "setup.py" "synmark" "stubs" ".ci"
+ )
fi
fi
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