diff --git a/.github/workflows/nix-action-8.16.yml b/.github/workflows/nix-action-8.16.yml
index ba8f12e..61b435c 100644
--- a/.github/workflows/nix-action-8.16.yml
+++ b/.github/workflows/nix-action-8.16.yml
@@ -40,8 +40,8 @@ jobs:
       name: Checking presence of CI target coq
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"8.16\" --argstr job \"coq\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: Building/fetching current CI target
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "8.16" --argstr
@@ -88,8 +88,8 @@ jobs:
       name: Checking presence of CI target mathcomp
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"8.16\" --argstr job \"mathcomp\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: 'Building/fetching previous CI target: coq'
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "8.16" --argstr
@@ -173,8 +173,8 @@ jobs:
       name: Checking presence of CI target odd-order
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"8.16\" --argstr job \"odd-order\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: 'Building/fetching previous CI target: coq'
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "8.16" --argstr
@@ -215,8 +215,10 @@ name: Nix CI for bundle 8.16
 'on':
   pull_request:
     paths:
-    - .github/workflows/**
+    - .github/workflows/nix-action-8.16.yml
   pull_request_target:
+    paths-ignore:
+    - .github/workflows/nix-action-8.16.yml
     types:
     - opened
     - synchronize
diff --git a/.github/workflows/nix-action-8.17.yml b/.github/workflows/nix-action-8.17.yml
index 10af548..b838ed5 100644
--- a/.github/workflows/nix-action-8.17.yml
+++ b/.github/workflows/nix-action-8.17.yml
@@ -40,8 +40,8 @@ jobs:
       name: Checking presence of CI target coq
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"8.17\" --argstr job \"coq\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: Building/fetching current CI target
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "8.17" --argstr
@@ -88,8 +88,8 @@ jobs:
       name: Checking presence of CI target mathcomp
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"8.17\" --argstr job \"mathcomp\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: 'Building/fetching previous CI target: coq'
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "8.17" --argstr
@@ -173,8 +173,8 @@ jobs:
       name: Checking presence of CI target odd-order
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"8.17\" --argstr job \"odd-order\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: 'Building/fetching previous CI target: coq'
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "8.17" --argstr
@@ -215,8 +215,10 @@ name: Nix CI for bundle 8.17
 'on':
   pull_request:
     paths:
-    - .github/workflows/**
+    - .github/workflows/nix-action-8.17.yml
   pull_request_target:
+    paths-ignore:
+    - .github/workflows/nix-action-8.17.yml
     types:
     - opened
     - synchronize
diff --git a/.github/workflows/nix-action-master.yml b/.github/workflows/nix-action-master.yml
index bce33de..1b14be7 100644
--- a/.github/workflows/nix-action-master.yml
+++ b/.github/workflows/nix-action-master.yml
@@ -40,8 +40,8 @@ jobs:
       name: Checking presence of CI target coq
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"master\" --argstr job \"coq\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: Building/fetching current CI target
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "master"
@@ -88,8 +88,8 @@ jobs:
       name: Checking presence of CI target coq-elpi
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"master\" --argstr job \"coq-elpi\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: 'Building/fetching previous CI target: coq'
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "master"
@@ -141,8 +141,8 @@ jobs:
       name: Checking presence of CI target hierarchy-builder
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"master\" --argstr job \"hierarchy-builder\" \\\n   --dry-run 2>&1\
-        \ > /dev/null)\necho $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run\
-        \ | grep \"built:\" | sed \"s/.*/built/\")\n"
+        \ > /dev/null)\necho $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"\
+        built:\" | sed \"s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: 'Building/fetching previous CI target: coq'
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "master"
@@ -199,8 +199,8 @@ jobs:
       name: Checking presence of CI target mathcomp
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"master\" --argstr job \"mathcomp\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: 'Building/fetching previous CI target: coq'
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "master"
@@ -284,8 +284,8 @@ jobs:
       name: Checking presence of CI target odd-order
       run: "nb_dry_run=$(NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link \\\n   --argstr\
         \ bundle \"master\" --argstr job \"odd-order\" \\\n   --dry-run 2>&1 > /dev/null)\n\
-        echo $nb_dry_run\necho ::set-output name=status::$(echo $nb_dry_run | grep\
-        \ \"built:\" | sed \"s/.*/built/\")\n"
+        echo $nb_dry_run\necho status=$(echo $nb_dry_run | grep \"built:\" | sed \"\
+        s/.*/built/\") >> $GITHUB_OUTPUT\n"
     - if: steps.stepCheck.outputs.status == 'built'
       name: 'Building/fetching previous CI target: coq'
       run: NIXPKGS_ALLOW_UNFREE=1 nix-build --no-out-link --argstr bundle "master"
@@ -326,8 +326,10 @@ name: Nix CI for bundle master
 'on':
   pull_request:
     paths:
-    - .github/workflows/**
+    - .github/workflows/nix-action-master.yml
   pull_request_target:
+    paths-ignore:
+    - .github/workflows/nix-action-master.yml
     types:
     - opened
     - synchronize
diff --git a/.nix/coq-nix-toolbox.nix b/.nix/coq-nix-toolbox.nix
index 3836be9..b56aee1 100644
--- a/.nix/coq-nix-toolbox.nix
+++ b/.nix/coq-nix-toolbox.nix
@@ -1 +1 @@
-"8893994e8efdbbf72ec4e3eaf84ea676b77ef38f"
+"2d8c43d336716fea48267d8259c645e870883361"