From e3b08f02353629ba4af2be089dc01ccabe562c3d Mon Sep 17 00:00:00 2001
From: Igor Sirotin <sirotin@status.im>
Date: Tue, 28 Jul 2026 11:23:55 +0100
Subject: [PATCH] Provide the attic client when not installing Nix
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

attic-action resolves attic via PATH, which relies on a Nix installer
action having run in the same job. With install-nix: false, build the
client and put its store path on PATH — unless the runner already
provides one.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 action.yml | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/action.yml b/action.yml
index f0180fc..943bf4a 100644
--- a/action.yml
+++ b/action.yml
@@ -63,6 +63,16 @@ runs:
           fallback = true
           ${{ inputs.extra-nix-config }}
 
+    # attic-action resolves `attic` via PATH, which only works when a Nix
+    # installer action ran in the same job. With preinstalled Nix (self-hosted
+    # runners) provide the client at its store path.
+    - name: Provide attic client
+      if: inputs.install-nix != 'true'
+      shell: bash
+      run: |
+        command -v attic >/dev/null && exit 0
+        echo "$(nix build --no-link --print-out-paths 'github:NixOS/nixpkgs/nixpkgs-unstable#attic-client')/bin" >> "$GITHUB_PATH"
+
     - name: Select Attic cache and token
       id: select
       shell: bash