From 164c9d00dcc9088c210f402585730424cec085a5 Mon Sep 17 00:00:00 2001
From: Luc Perkins <lucperkins@gmail.com>
Date: Fri, 17 May 2024 11:04:45 -0300
Subject: [PATCH] Check expected Nix versions using script

---
 .editorconfig             | 10 ++++++++++
 .github/verify-version.sh | 13 +++++++++++++
 .github/workflows/ci.yml  | 20 ++++++++++----------
 3 files changed, 33 insertions(+), 10 deletions(-)
 create mode 100644 .editorconfig
 create mode 100755 .github/verify-version.sh

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..a56f2d2
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,10 @@
+# https://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
diff --git a/.github/verify-version.sh b/.github/verify-version.sh
new file mode 100755
index 0000000..c3ee0af
--- /dev/null
+++ b/.github/verify-version.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env
+
+EXPECTED_VERSION="${1}"
+
+NIX_VERSION_OUTPUT=$(nix --version)
+NIX_VERSION=$(echo "${NIX_VERSION_OUTPUT}" | awk '{print $NF}')
+EXPECTED_OUTPUT="nix (Nix) ${EXPECTED_VERSION}"
+if [ "${NIX_VERSION_OUTPUT}" != "${EXPECTED_OUTPUT}" ]; then
+  echo "Nix version ${NIX_VERSION} didn't match expected version ${EXPECTED_VERSION}"
+  exit 1
+else
+  echo "Success! Nix version ${NIX_VERSION} installed as expected"
+fi
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f64a05b..1ffae94 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -222,37 +222,37 @@ jobs:
         uses: ./
         with:
           source-url: https://github.com/DeterminateSystems/nix-installer/releases/download/v0.18.0/nix-installer-x86_64-linux
-      - name: Ensure that Nix is installed via alternative source-url
-        run: nix --version
+      - name: Ensure that the expected Nix version is installed via alternative source-url
+        run: .github/verify-version.sh 2.18.0
 
       - name: Install with alternative source-pr
         uses: ./
         with:
           # https://github.com/DeterminateSystems/nix-installer/pull/938
           source-pr: "938"
-      - name: Ensure that Nix is installed via alternative source-pr
-        run: nix --version
+      - name: Ensure that the expected Nix version is installed via alternative source-pr
+        run: .github/verify-version.sh 2.21.2
 
       - name: Install with alternative source-revision
         uses: ./
         with:
           # https://github.com/DeterminateSystems/nix-installer/tree/ccf1d39a83099657ad324e7927676432435431e1
           source-revision: "ccf1d39a83099657ad324e7927676432435431e1"
-      - name: Ensure that Nix is installed via alternative source-revision
-        run: nix --version
+      - name: Ensure that the expected Nix version is installed via alternative source-revision
+        run: .github/verify-version.sh 2.21.2
 
       - name: Install with alternative source-branch
         uses: ./
         with:
           # https://github.com/DeterminateSystems/nix-installer/tree/lazy-trees
           source-revision: "lazy-trees"
-      - name: Ensure that Nix is installed via alternative source-branch
-        run: nix --version
+      - name: Ensure that the expected Nix version is installed via alternative source-branch
+        run: .github/verify-version.sh 2.21.2
 
       - name: Install with alternative source-tag
         uses: ./
         with:
           # https://github.com/DeterminateSystems/nix-installer/tree/v0.14.0
           source-tag: "v0.14.0"
-      - name: Ensure that Nix is installed via alternative source-tag
-        run: nix --version
+      - name: Ensure that the expected Nix version is installed via alternative source-tag
+        run: .github/verify-version.sh 2.18.0