expose nix executables also for runner user

.github/workflows/test.yml

@@ -18,3 +18,6 @@ jobs:
     - name: Install Nix
       uses: ./
     - run: nix-build test.nix
+    - run: nix-env -iA cachix -f https://github.com/NixOS/nixpkgs/tarball/ab5863afada3c1b50fc43bf774b75ea71b287cde
+    # cachix should be available
+    - run: which cachix

lib/main.js

@@ -46,7 +46,7 @@ function run() {
             // TODO: retry due to all the things that go wrong
             const nixInstall = yield tc.downloadTool('https://nixos.org/nix/install');
             yield exec.exec("sh", [nixInstall, "--daemon"]);
-            core.exportVariable('PATH', `${PATH}:/nix/var/nix/profiles/default/bin`);
+            core.exportVariable('PATH', `${PATH}:/nix/var/nix/profiles/default/bin:/nix/var/nix/profiles/per-user/runner/profile/bin`);
             core.exportVariable('NIX_PATH', `/nix/var/nix/profiles/per-user/root/channels`);
             if (os_1.type() == "Darwin") {
                 // macOS needs certificates hints

src/main.ts

@@ -35,7 +35,7 @@ async function run() {
     // TODO: retry due to all the things that go wrong
     const nixInstall = await tc.downloadTool('https://nixos.org/nix/install');
     await exec.exec("sh", [nixInstall, "--daemon"]);
-    core.exportVariable('PATH', `${PATH}:/nix/var/nix/profiles/default/bin`)
+    core.exportVariable('PATH', `${PATH}:/nix/var/nix/profiles/default/bin:/nix/var/nix/profiles/per-user/runner/profile/bin`)
     core.exportVariable('NIX_PATH', `/nix/var/nix/profiles/per-user/root/channels`)
 
     if (type() == "Darwin") {