[PATCH v2 3/3] Add a pre-commit hook to check the glossaries

It is easy to badly order the glossaries or forget to update the list at
the beginning of the variables.rst file. Add a pre-commit hook that does
it for us, and update the README to mention to enable it.

Tested-by: Quentin Schulz <[email protected]>
Reviewed-by: Quentin Schulz <[email protected]>
Signed-off-by: Antonin Godard <[email protected]>
---
 .pre-commit-config.yaml |  8 ++++++++
 documentation/README    | 10 ++++++++++
 2 files changed, 18 insertions(+)

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 000000000..f2b73a481
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,8 @@
+repos:
+  - repo: local
+    hooks:
+      - id: check-glossaries
+        name: Check glossaries alphabetical order
+        entry: ./documentation/tools/check-glossaries
+        language: python
+        pass_filenames: false
diff --git a/documentation/README b/documentation/README
index 7c4472c73..326930932 100644
--- a/documentation/README
+++ b/documentation/README
@@ -89,6 +89,16 @@ generated with DocBook.
 How to build the Yocto Project documentation
 ============================================
 
+If possible, install pre-commit hooks to make sure you did not miss any
+updates that are run automatically:
+
+  $ pre-commit install
+
+The pre-commit project can be installed on your host using your package manager,
+usually under the name "pre-commit", e.g.:
+
+  $ sudo apt-get install pre-commit
+
 To build the documentation, you need Sphinx and a few other packages,
 which depend on your host GNU/Linux distribution. Such packages are listed on
 https://docs.yoctoproject.org/dev/ref-manual/system-requirements.html#required-packages-for-the-build-host

-- 
2.54.0