[readme] add background on io.js

.github/workflows/release.yml

@@ -17,6 +17,7 @@ jobs:
             api.github.com:443
             objects.githubusercontent.com:443
             raw.githubusercontent.com:443
+            release-assets.githubusercontent.com:443
             registry.npmjs.org:443
       - uses: actions/checkout@v4
         with:

.github/workflows/windows-npm.yml

@@ -133,6 +133,16 @@ jobs:
         with:
           distribution: ${{ matrix.wsl-distrib }}
           additional-packages: bash git curl ca-certificates wget
+
+      # see https://github.com/Vampire/setup-wsl/issues/76#issuecomment-3258201135
+      - shell: 'wsl-bash {0}'
+        run: 'sed -i s/ftp.debian.org/archive.debian.org/'
+      - uses: Vampire/setup-wsl@v3
+        with:
+          distribution: ${{ matrix.wsl-distrib }}
+          additional-packages: bash git curl ca-certificates wget
+          update: 'true'
+
       - name: Retrieve nvm on WSL
         run: |
           if [ -z "${{ matrix.method }}" ]; then
@@ -176,6 +186,16 @@ jobs:
         with:
           distribution: ${{ matrix.wsl-distrib }}
           additional-packages: bash git curl ca-certificates wget
+
+      # see https://github.com/Vampire/setup-wsl/issues/76#issuecomment-3258201135
+      - shell: 'wsl-bash {0}'
+        run: 'sed -i s/ftp.debian.org/archive.debian.org/'
+      - uses: Vampire/setup-wsl@v3
+        with:
+          distribution: ${{ matrix.wsl-distrib }}
+          additional-packages: bash git curl ca-certificates wget
+          update: 'true'
+
       - name: Retrieve nvm on WSL
         run: |
           if [ -z "${{ matrix.method }}" ]; then

README.md

@@ -496,7 +496,10 @@ stevemao/left-pad
 
 ### io.js
 
-If you want to install [io.js](https://github.com/iojs/io.js/):
+> [!WARNING]
+> io.js was a [fork of Node.js](https://en.wikipedia.org/wiki/Node.js#History), created in 2014 and merged back in 2015. io.js shipped v1, v2, and v3 release lines; post-merge, node.js began releasing with v4.
+
+If you want to install io.js:
 
 ```sh
 nvm install iojs

nvm.sh

@@ -2985,7 +2985,8 @@ nvm_check_file_permissions() {
       if [ ! -L "${FILE}" ] && ! nvm_check_file_permissions "${FILE}"; then
         return 2
       fi
-    elif [ -e "$FILE" ] && [ ! -w "$FILE" ] && [ ! -O "$FILE" ]; then
+    elif [ -e "$FILE" ] && [ ! -w "$FILE" ] && [ -z "$(command find "${FILE}" -prune -user "$(command id -u)")" ]; then
+      # ^ file ownership check from https://www.shellcheck.net/wiki/SC3067
       nvm_err "file is not writable or self-owned: $(nvm_sanitize_path "$FILE")"
       return 1
     fi