From eac53361adbabfb17b30bf7f79baa7dfd0aec4d5 Mon Sep 17 00:00:00 2001
From: Hynek Schlawack <hs@ox.cx>
Date: Thu, 11 Apr 2024 09:08:07 -0700
Subject: [PATCH 1/4] Add uv cache busting

---
 action.yml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/action.yml b/action.yml
index 893e78b..ad88033 100644
--- a/action.yml
+++ b/action.yml
@@ -52,14 +52,17 @@ runs:
       shell: bash
 
     - name: Find uv cache
-      run: echo "UV_CACHE=$(uv cache dir)" >>$GITHUB_ENV
+      run: |
+        echo "UV_CACHE=$(uv cache dir)" >>$GITHUB_ENV
+        DEPS="${{ github.action_path }}/requirements/tools.txt"
+        echo "REQS_HASH=$(sha256sum $DEPS | cut -d' ' -f1)" >>$GITHUB_ENV
       shell: bash
 
     - name: Cache uv
       uses: actions/cache@v4
       with:
         path: ${{ env.UV_CACHE }}
-        key: ${{ runner.os }}-uv
+        key: baipp-${{ runner.os }}-${{ env.REQS_HASH }}
 
     - name: Create venv for tools
       run: >

From 71526e4b814adba059d387423ac948b646a4c886 Mon Sep 17 00:00:00 2001
From: Hynek Schlawack <hs@ox.cx>
Date: Thu, 11 Apr 2024 09:37:41 -0700
Subject: [PATCH 2/4] We only run on Linux

---
 action.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/action.yml b/action.yml
index ad88033..d7918f5 100644
--- a/action.yml
+++ b/action.yml
@@ -62,7 +62,7 @@ runs:
       uses: actions/cache@v4
       with:
         path: ${{ env.UV_CACHE }}
-        key: baipp-${{ runner.os }}-${{ env.REQS_HASH }}
+        key: baipp-${{ env.REQS_HASH }}
 
     - name: Create venv for tools
       run: >

From 5ea8064d273e1c7c2542edca8472f1ff3ee0cae6 Mon Sep 17 00:00:00 2001
From: Hynek Schlawack <hs@ox.cx>
Date: Thu, 11 Apr 2024 09:41:22 -0700
Subject: [PATCH 3/4] Add cl

---
 CHANGELOG.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a56af1f..4daf46f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased](https://github.com/hynek/build-and-inspect-python-package/compare/v2.2.1...main)
 
+### Added
+
+- Cache busting for the *uv* cache.
+  GitHub Actions's caching behavior is a bit idiosyncratic:
+  Once a cache is created, it's immutable.
+  But as long as it's accessed within 7 days, it never goes away.
+
+  Therefore, *baipp* now uses the hash of the requirements file as part of the cache key.
+  Behaviorally, nothing changes, except that the cache doesn't grow useless over time.
+  [#115](https://github.com/hynek/build-and-inspect-python-package/pull/115)
+
 
 ## [2.2.1](https://github.com/hynek/build-and-inspect-python-package/compare/v2.2.0...v2.2.1) - 2024-04-02
 

From 140f05e7240c32d1ba16da9e19307f38513c30e2 Mon Sep 17 00:00:00 2001
From: Hynek Schlawack <hs@ox.cx>
Date: Thu, 11 Apr 2024 09:43:47 -0700
Subject: [PATCH 4/4] Simplify

---
 action.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/action.yml b/action.yml
index d7918f5..acb1e0c 100644
--- a/action.yml
+++ b/action.yml
@@ -51,11 +51,11 @@ runs:
       run: curl -LsSf https://astral.sh/uv/install.sh | sh
       shell: bash
 
-    - name: Find uv cache
+    - name: Find uv cache and hash lock file
       run: |
         echo "UV_CACHE=$(uv cache dir)" >>$GITHUB_ENV
-        DEPS="${{ github.action_path }}/requirements/tools.txt"
-        echo "REQS_HASH=$(sha256sum $DEPS | cut -d' ' -f1)" >>$GITHUB_ENV
+
+        echo "REQS_HASH=$(sha256sum ${{ github.action_path }}/requirements/tools.txt | cut -d' ' -f1)" >>$GITHUB_ENV
       shell: bash
 
     - name: Cache uv