Nodeenv

https://ekalinin.github.io/nodeenv/
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Nodeenv is a tool for creating isolated Node.js virtual environments, allowing separate installation...
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### Example requirements file content

Source: https://ekalinin.github.io/nodeenv

A plain text file listing Node.js packages and their specific versions, used for creating repeatable installations.

```text
connect@1.3.0
express@2.2.2
jade@0.10.4
mime@1.2.1
npm@0.3.17
qs@0.0.7

```

--------------------------------

### Install nodeenv Globally with easy_install

Source: https://ekalinin.github.io/nodeenv

Installs nodeenv globally using easy_install. Requires sudo privileges.

```bash
$ sudo easy_install nodeenv

```

--------------------------------

### Install nodeenv from GitHub

Source: https://ekalinin.github.io/nodeenv

Installs the latest version of nodeenv by cloning the GitHub repository and running the script directly. Useful for development or using the most recent features.

```bash
$ git clone https://github.com/ekalinin/nodeenv.git
$ ./nodeenv/nodeenv.py --help

```

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### Create environment copy from requirements file

Source: https://ekalinin.github.io/nodeenv

Builds a new Node.js environment ('env-copy') by installing packages listed in the specified requirements file ('../prod-requirements.txt'). Supports parallel installation using the --jobs flag.

```bash
$ nodeenv --requirement=../prod-requirements.txt --jobs=4 env-copy

```

--------------------------------

### Save installed packages to requirements file

Source: https://ekalinin.github.io/nodeenv

After activating a Node.js environment and installing global packages (e.g., express, jade), this command saves the list of installed packages and their versions to a specified file.

```bash
(env) $ npm install -g express
(env) $ npm install -g jade
(env) $ freeze ../prod-requirements.txt

```

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### Check Node.js and npm versions

Source: https://ekalinin.github.io/nodeenv

Verifies the versions of Node.js and npm installed within the activated environment. This is useful for confirming the environment is set up correctly.

```bash
(env) $ node -v
v0.4.6

(env) $ npm -v
0.3.18

```

--------------------------------

### Install nodeenv Locally within a virtualenv

Source: https://ekalinin.github.io/nodeenv

Installs nodeenv inside an existing Python virtual environment. First, create and activate a virtual environment, then install nodeenv using pip.

```bash
$ virtualenv env
$ . env/bin/activate
(env) $ pip install nodeenv
(env) $ nodeenv --version
0.6.5

```

--------------------------------

### Install nodeenv Globally with pip

Source: https://ekalinin.github.io/nodeenv

Installs nodeenv globally using pip. Requires sudo privileges.

```bash
$ sudo pip install nodeenv

```

--------------------------------

### Install Node.js module globally within a Python virtualenv

Source: https://ekalinin.github.io/nodeenv

Installs a Node.js package globally within the integrated Python virtual environment. The 'which' command verifies that the executable is installed in the virtual environment's bin directory.

```bash
$ workon my_env
(my_env) $ npm install -g coffee-script
(my_env) $ which coffee
/home/User/virtualenvs/my_env/bin/coffee

```

--------------------------------

### Run nodeenv from a downloaded script

Source: https://ekalinin.github.io/nodeenv

Executes nodeenv using a downloaded raw Python script. This method avoids global installation and is useful for quick testing or specific environments.

```bash
$ wget https://raw.github.com/ekalinin/nodeenv/master/nodeenv.py
$ python nodeenv.py --version
0.6.5

```

--------------------------------

### Integrate nodeenv with Python virtualenv (wrapper)

Source: https://ekalinin.github.io/nodeenv

Demonstrates how to create and activate a Python virtual environment using virtualenvwrapper, preparing it for integration with nodeenv.

```bash
# in case of using virtualenv_wrapper
$ mkvirtualenv my_env

```

--------------------------------

### Integrate nodeenv with Python virtualenv (manual)

Source: https://ekalinin.github.io/nodeenv

Shows the manual activation of a Python virtual environment using virtualenv, setting the stage for nodeenv integration.

```bash
# in cace of using virtualenv
$ . my_env/bin/activate

```

--------------------------------

### Create a new Node.js environment

Source: https://ekalinin.github.io/nodeenv

Initializes a new isolated Node.js environment named 'env'. This command sets up the directory structure and necessary files for the isolated environment.

```bash
$ nodeenv env

```

--------------------------------

### Activate a Node.js environment

Source: https://ekalinin.github.io/nodeenv

Activates the previously created Node.js environment. This modifies your shell's PATH to prioritize the executables within the 'env' directory.

```bash
$ . env/bin/activate

```

--------------------------------

### Add Node.js environment to existing Python virtualenv

Source: https://ekalinin.github.io/nodeenv

Adds a Node.js virtual environment to an already activated Python virtual environment ('my_env'). The '-p' flag indicates integration with the existing Python environment.

```bash
(my_env) $ nodeenv -p

```

--------------------------------

### Deactivate the Node.js environment

Source: https://ekalinin.github.io/nodeenv

Exits the current Node.js environment, restoring your shell's default PATH and environment variables.

```bash
(env) $ deactivate_node

```
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