Merge 09c4fcfbed1d52857a4c90fade31f18058f5bf9b into 762f9ef9d17623b45095e8ca1a996c8928f3f424

See ee6f7667 / #3067

.travis.yml

@@ -32,7 +32,7 @@ before_install:
   - zsh  --version
   - dpkg -s dash | grep ^Version | awk '{print $2}'
   # install python
-  - pyenv install 2.7.18
+  - pyenv local 2.7.18 || pyenv install 2.7.18
   - pyenv local 2.7.18 || echo 'pyenv failed'
   - python -V
 install:

README.md

@@ -97,6 +97,8 @@ nvm is a version manager for [node.js](https://nodejs.org/en/), designed to be i
 
 ### Install & Update Script
 
+**If you use macOS, you must install Xcode and agree to the Xcode License before you install nvm.**
+
 To **install** or **update** nvm, you should run the [install script][2]. To do that, you may either download and run the script manually, or use the following cURL or Wget command:
 ```sh
 curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
@@ -105,7 +107,7 @@ curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
 wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
 ```
 
-Running either of the above commands downloads a script and runs it. The script clones the nvm repository to `~/.nvm`, and attempts to add the source lines from the snippet below to the correct profile file (`~/.bash_profile`, `~/.zshrc`, `~/.profile`, or `~/.bashrc`).
+Running either of the above commands downloads a script and runs it. The script clones the nvm repository to `~/.nvm`, and attempts to add the source lines from the snippet below to the correct profile file (`~/.bash_profile`, `~/.zshrc`, `~/.profile`, or `~/.bashrc`). **If you don't have a profile file in your home dir, you'll need to add the appropriate one before you run the script.**
 
 <a id="profile_snippet"></a>
 ```sh