From 2db16995b50fb6a657b1cbe72c76d2ac57155497 Mon Sep 17 00:00:00 2001
From: Alan O'Cais <alan.ocais@cecam.org>
Date: Tue, 14 Oct 2025 16:02:56 +0200
Subject: [PATCH 1/3] Disable mandb updates for action

---
 action.yml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/action.yml b/action.yml
index 4135944..4b4e9bc 100644
--- a/action.yml
+++ b/action.yml
@@ -24,7 +24,13 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - uses: cvmfs-contrib/github-action-cvmfs@f93ba85417fc145df0f82c672618dc7dd94c1702  # v5.2 + cache name update
+    - id: disable-mandb
+      run: |
+        # avoid processing trigger for man-db (seems to slow down installations)
+        echo "set man-db/auto-update false" | sudo debconf-communicate
+        sudo dpkg-reconfigure man-db
+    - id: install-cvmfs
+      uses: cvmfs-contrib/github-action-cvmfs@f93ba85417fc145df0f82c672618dc7dd94c1702  # v5.2 + cache name update
       with:
         # Can't use config package for macOS but our repos are available with the default configuration anyway
         # cvmfs_config_package: https://github.com/EESSI/filesystem-layer/releases/download/latest/cvmfs-config-eessi_latest_all.deb

From eb3efa90c034334bcd0013854f64395950398a87 Mon Sep 17 00:00:00 2001
From: Alan O'Cais <alan.ocais@cecam.org>
Date: Tue, 14 Oct 2025 16:05:55 +0200
Subject: [PATCH 2/3] Add missing shell for command

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

diff --git a/action.yml b/action.yml
index 4b4e9bc..550a7a8 100644
--- a/action.yml
+++ b/action.yml
@@ -29,6 +29,7 @@ runs:
         # avoid processing trigger for man-db (seems to slow down installations)
         echo "set man-db/auto-update false" | sudo debconf-communicate
         sudo dpkg-reconfigure man-db
+      shell: bash
     - id: install-cvmfs
       uses: cvmfs-contrib/github-action-cvmfs@f93ba85417fc145df0f82c672618dc7dd94c1702  # v5.2 + cache name update
       with:

From 91986cd59751a9b57e5e44e6fb042055c42906d2 Mon Sep 17 00:00:00 2001
From: Alan O'Cais <alan.ocais@cecam.org>
Date: Tue, 14 Oct 2025 16:12:01 +0200
Subject: [PATCH 3/3] Be more careful

---
 action.yml | 29 ++++++++++++++++++++++++++---
 1 file changed, 26 insertions(+), 3 deletions(-)

diff --git a/action.yml b/action.yml
index 550a7a8..bd9b361 100644
--- a/action.yml
+++ b/action.yml
@@ -26,9 +26,32 @@ runs:
   steps:
     - id: disable-mandb
       run: |
-        # avoid processing trigger for man-db (seems to slow down installations)
-        echo "set man-db/auto-update false" | sudo debconf-communicate
-        sudo dpkg-reconfigure man-db
+        # Detect macOS (Darwin) and exit safely
+        if [ "$(uname)" = "Darwin" ]; then
+          echo "🛑 Skipping man-db disable: not applicable on macOS."
+          exit 0
+        fi
+        # Proceed only if we're on a Debian/Ubuntu-like Linux
+        if [ ! -x /usr/bin/dpkg ]; then
+          echo "⚠️  dpkg not found — this system doesn't use man-db triggers."
+          exit 0
+        fi
+        # Disable man-db updates (safe even if man-db is not installed)
+        # 1. Ensure the directory for custom binaries exists
+        sudo mkdir -p /usr/local/sbin
+        # 2. If mandb exists, back it up once
+        if [ -x /usr/bin/mandb ] && [ ! -f /usr/bin/mandb.disabled ]; then
+          sudo mv /usr/bin/mandb /usr/bin/mandb.disabled
+        fi
+        # 3. Replace mandb with a dummy command that does nothing but succeed
+        if [ ! -e /usr/local/sbin/mandb ]; then
+          echo -e '#!/bin/sh\nexit 0' | sudo tee /usr/local/sbin/mandb >/dev/null
+          sudo chmod +x /usr/local/sbin/mandb
+        fi
+        # 4. (Optional) Remove man-db’s post-install trigger script if it exists
+        if [ -f /var/lib/dpkg/info/man-db.postinst ]; then
+          sudo rm -f /var/lib/dpkg/info/man-db.postinst
+        fi
       shell: bash
     - id: install-cvmfs
       uses: cvmfs-contrib/github-action-cvmfs@f93ba85417fc145df0f82c672618dc7dd94c1702  # v5.2 + cache name update