Update docs about the install script

README.md

@@ -65,10 +65,48 @@ environments. It is a relative new proposal and there are not many tools support
 is [pyflow]), but it is written with Rust and thus can't get much help from the big Python community.
 For the same reason it can't act as a PEP 517 backend.
 
-## Installation:
+## Installation
 
 PDM requires python version 3.7 or higher.
 
+Like Pip, PDM provides an installation script that will install PDM into an isolated environment.
+
+**For Linux/Mac**
+
+```bash
+curl -sSL https://raw.githubusercontent.com/pdm-project/pdm/install-pdm.py | python -
+```
+
+**For Windows**
+
+```powershell
+(Invoke-WebRequest -Uri https://raw.githubusercontent.com/pdm-project/pdm/install-pdm.py -UseBasicParsing).Content | python -
+```
+
+The installer will install PDM into the user site and the location depends on the system:
+
+- `$HOME/.local/bin` for Unix
+- `%APPDATA%\Python\Scripts` on Windows
+
+You can pass additional options to the script to control how PDM is installed:
+
+```
+usage: install-pdm.py [-h] [-v VERSION] [--prerelease] [--remove] [-p PATH] [-d DEP]
+
+optional arguments:
+  -h, --help            show this help message and exit
+  -v VERSION, --version VERSION | envvar: PDM_VERSION
+                        Specify the version to be installed, or HEAD to install from the main branch
+  --prerelease | envvar: PDM_PRERELEASE    Allow prereleases to be installed
+  --remove | envvar: PDM_REMOVE            Remove the PDM installation
+  -p PATH, --path PATH | envvar: PDM_HOME  Specify the location to install PDM
+  -d DEP, --dep DEP | envvar: PDM_DEPS     Specify additional dependencies, can be given multiple times
+```
+
+You can either pass the options after the script or set the env var value.
+
+## Alternative Installation Methods
+
 If you are on MacOS and using `homebrew`, install it by:
 
 ```bash

README_zh.md

@@ -60,11 +60,49 @@ foo
 没有很多相关的工具实现它，这其中就有 [pyflow]。但 pyflow 又是用 Rust 写的，不是所有 Python 的社区
 都会用 Rust，这样就没法贡献代码，而且，基于同样的原因，pyflow 并不支持 PEP 517 构建。
 
-## 安装:
+## 安装
 
 PDM 需要 Python 3.7 或更高版本。
 
-如果你使用的是 MacOS 并且安装了`homebrew`:
+像 pip 一样，PDM 也提供了一键安装脚本，用来将 PDM 安装在一个隔离的环境中。
+
+**Linux/Mac 安装命令**
+
+```bash
+curl -sSL https://raw.githubusercontent.com/pdm-project/pdm/install-pdm.py | python -
+```
+
+**Windows 安装命令**
+
+```powershell
+(Invoke-WebRequest -Uri https://raw.githubusercontent.com/pdm-project/pdm/install-pdm.py -UseBasicParsing).Content | python -
+```
+
+默认情况下，此脚本会将 PDM 安装在 Python 的用户目录下，具体位置取决于当前系统：
+
+- Unix 上是 `$HOME/.local/bin`
+- Windows 上是 `%APPDATA%\Python\Scripts`
+
+你还可以通过命令行的选项来改变安装脚本的行为：
+
+```
+usage: install-pdm.py [-h] [-v VERSION] [--prerelease] [--remove] [-p PATH] [-d DEP]
+
+optional arguments:
+  -h, --help            show this help message and exit
+  -v VERSION, --version VERSION | envvar: PDM_VERSION
+                        Specify the version to be installed, or HEAD to install from the main branch
+  --prerelease | envvar: PDM_PRERELEASE    Allow prereleases to be installed
+  --remove | envvar: PDM_REMOVE            Remove the PDM installation
+  -p PATH, --path PATH | envvar: PDM_HOME  Specify the location to install PDM
+  -d DEP, --dep DEP | envvar: PDM_DEPS     Specify additional dependencies, can be given multiple times
+```
+
+你既可以通过直接增加选项，也可以通过设置对应的环境变量来达到这一效果。
+
+## 其他安装方法
+
+如果你使用的是 MacOS 并且安装了 `homebrew`:
 
 ```bash
 $ brew install pdm
@@ -145,7 +183,6 @@ $ python /home/frostming/workspace/flask_app/app.py
 
 [Awesome PDM](https://github.com/pdm-project/awesome-pdm) 这个项目收集了一些非常有用的 PDM 插件及相关资源。
 
-
 ## 常见问题
 
 ### 1. `__pypackages__` 里都包含什么?

docs/docs/index.md

@@ -28,6 +28,47 @@ PDM requires Python 3.7+ to be installed. It works on multiple platforms includi
 
 ### Recommended installation method
 
+PDM requires python version 3.7 or higher.
+
+Like Pip, PDM provides an installation script that will install PDM into an isolated environment.
+
+**For Linux/Mac**
+
+```bash
+curl -sSL https://raw.githubusercontent.com/pdm-project/pdm/install-pdm.py | python -
+```
+
+**For Windows**
+
+```powershell
+(Invoke-WebRequest -Uri https://raw.githubusercontent.com/pdm-project/pdm/install-pdm.py -UseBasicParsing).Content | python -
+```
+
+The installer will install PDM into the user site and the location depends on the system:
+
+- `$HOME/.local/bin` for Unix
+- `%APPDATA%\Python\Scripts` on Windows
+
+You can pass additional options to the script to control how PDM is installed:
+
+```
+usage: install-pdm.py [-h] [-v VERSION] [--prerelease] [--remove] [-p PATH] [-d DEP]
+
+optional arguments:
+  -h, --help            show this help message and exit
+  -v VERSION, --version VERSION | envvar: PDM_VERSION
+                        Specify the version to be installed, or HEAD to install from the main branch
+  --prerelease | envvar: PDM_PRERELEASE    Allow prereleases to be installed
+  --remove | envvar: PDM_REMOVE            Remove the PDM installation
+  -p PATH, --path PATH | envvar: PDM_HOME  Specify the location to install PDM
+  -d DEP, --dep DEP | envvar: PDM_DEPS     Specify additional dependencies, can be given multiple times
+```
+
+You can either pass the options after the script or set the env var value.
+
+
+### Other installation methods
+
 If your are on MacOS and using `homebrew`, install it by:
 
 ```bash
@@ -41,9 +82,7 @@ is via [pipx](https://pypi.org/project/pipx):
 $ pipx install pdm
 ```
 
-### Other installation methods
-
-Install PDM into user site with `pip`:
+Or you can install PDM into the user site with `pip`:
 
 ```console
 $ pip install --user pdm

news/508.feature.md

+Add an install script to bootstrap PDM quickly without help of other tools. Modify docs to recommend this installation method.