Test tox installation on pre-installed python

.github/workflows/e2e.yaml

@@ -18,6 +18,34 @@ jobs:
           reporter: github-pr-check
           fail-on-error: true
 
+
+  test-python-pre-installed:
+    name: Test pre-installed-python environment
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python:
+          - '3.8'
+          - '3.10'
+          - '3.12'
+    steps:
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python }}
+      - name: Check out code
+        uses: actions/checkout@v4
+      - uses: ./
+        with:
+          provider: lxd
+          channel: latest/stable
+          juju-channel: 3/stable
+      - name: Run Tests for != 3.x
+        run: |
+          tox -e tests -- -k "not k8s"
+          exit $?
+  
+
   test-lxd:
     name: Test lxd environment
     runs-on: ${{ matrix.os }}

action.yaml

@@ -67,6 +67,10 @@ inputs:
     description: "microk8s addons to enable"
     required: false
     default: "storage dns rbac"
+  tox-version:
+    description: "Version of tox to install"
+    required: false
+    default: ""
   container-registry-url:
     description: "Container registry to use"
 runs:

dist/bootstrap/index.js

@@ -5671,6 +5671,29 @@ function fixed_revision_args(app, channel, arch) {
     }
     return `--channel=${channel}`;
 }
+function install_tox(tox_version = "") {
+    return __awaiter(this, void 0, void 0, function* () {
+        // Install tox if it's not already installed
+        const hasTox = yield exec.exec("which tox", [], ignoreFail);
+        if (hasTox == 0) {
+            core.info("tox is already installed");
+            exec.exec("tox --version");
+            return;
+        }
+        const hasPip = yield exec.exec("which pip", [], ignoreFail);
+        const version = tox_version ? `==${tox_version}` : "";
+        if (hasPip == 0) {
+            core.info(`pip is available, install tox${version}`);
+            yield exec.exec(`pip install tox${version}`);
+        }
+        else {
+            core.info("Neither tox nor pip are available, install python3-pip via apt, then tox");
+            yield apt_get("update -yqq");
+            yield apt_get("install -yqq python3-pip");
+            yield exec.exec(`sudo --preserve-env=http_proxy,https_proxy,no_proxy pip3 install tox${version}`);
+        }
+    });
+}
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         const HOME = process.env["HOME"];
@@ -5687,6 +5710,7 @@ function run() {
         const juju_channel = core.getInput("juju-channel");
         const juju_bundle_channel = core.getInput("juju-bundle-channel");
         const juju_crashdump_channel = core.getInput("juju-crashdump-channel");
+        const tox_version = core.getInput("tox-version");
         const lxd_channel = (provider === "lxd" && channel) ? channel : core.getInput("lxd-channel");
         const microk8s_group = get_microk8s_group();
         let bootstrap_constraints = core.getInput("bootstrap-constraints");
@@ -5717,9 +5741,7 @@ function run() {
             yield exec.exec('bash', ['-c', 'sudo usermod -a -G lxd $USER']);
             core.endGroup();
             core.startGroup("Install tox");
-            yield apt_get("update -yqq");
-            yield apt_get("install -yqq python3-pip");
-            yield exec.exec("sudo --preserve-env=http_proxy,https_proxy,no_proxy pip3 install tox");
+            yield install_tox(tox_version);
             core.endGroup();
             core.startGroup("Install Juju");
             yield snap_install("juju", juju_channel, juju_channel.includes("2.9"));

src/bootstrap/index.ts

@@ -192,6 +192,29 @@ function fixed_revision_args(app:string, channel:string, arch:string): string{
     return `--channel=${channel}`
 }
 
+
+async function install_tox(tox_version: string = "") {
+    // Install tox if it's not already installed
+    const hasTox = await exec.exec("which tox", [], ignoreFail);
+    if (hasTox == 0) {
+        core.info("tox is already installed");
+        exec.exec("tox --version");
+        return;
+    }
+    const hasPip = await exec.exec("which pip", [], ignoreFail);
+    const version = tox_version ? `==${tox_version}` : "";
+    if (hasPip == 0) {
+        core.info(`pip is available, install tox${version}`);
+        await exec.exec(`pip install tox${version}`);
+    } else {
+        core.info("Neither tox nor pip are available, install python3-pip via apt, then tox");
+        await apt_get("update -yqq");
+        await apt_get("install -yqq python3-pip");
+        await exec.exec(`sudo --preserve-env=http_proxy,https_proxy,no_proxy pip3 install tox${version}`);
+    }
+}
+
+
 async function run() {
     const HOME = process.env["HOME"]
     const GITHUB_SHA = process.env["GITHUB_SHA"].slice(0, 5)
@@ -208,6 +231,7 @@ async function run() {
     const juju_channel = core.getInput("juju-channel");
     const juju_bundle_channel = core.getInput("juju-bundle-channel");
     const juju_crashdump_channel = core.getInput("juju-crashdump-channel")
+    const tox_version = core.getInput("tox-version");
 
     const lxd_channel = (provider === "lxd" && channel) ? channel : core.getInput("lxd-channel");
 
@@ -240,9 +264,7 @@ async function run() {
         await exec.exec('bash', ['-c', 'sudo usermod -a -G lxd $USER']);
         core.endGroup();
         core.startGroup("Install tox");
-        await apt_get("update -yqq");
-        await apt_get("install -yqq python3-pip");
-        await exec.exec("sudo --preserve-env=http_proxy,https_proxy,no_proxy pip3 install tox");
+        await install_tox(tox_version);
         core.endGroup();
         core.startGroup("Install Juju");
         await snap_install("juju", juju_channel, juju_channel.includes("2.9"));