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feat: dev env
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# Dev Environments
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On NixOS, in the global environment (home-manager), you can install only some general
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development tools and SDKs, such as `git`, `vim`, `emacs`, `tmux`, `zsh`, etc. For the
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dependencies of the project itself, it is best to have a separate `flake.nix` for each
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project to manage their respective development environments.
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For simplicity, you might also consider creating some general `flake.nix` templates for
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common languages in advance, which can be copied and modified as needed.
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Various plugins for editors like `neovim` will also have their own dependencies. These
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dependencies can be considered to be added to the IDE's own environment through parameters
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like `programs.neovim.extraPackages` in home-manager, ensuring that the IDE itself can run
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properly without polluting the global environment.
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## Templates for Development Environments
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We have learned how to build development environments, but it's a bit tedious to write
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`flake.nix` for each project.
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@ -7,8 +22,8 @@ Luckily, some people in the community have done this for us. The following repos
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contains development environment templates for most programming languages. Just copy and
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paste them:
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- [dev-templates](https://github.com/the-nix-way/dev-templates)
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- [MordragT/nix-templates](https://github.com/MordragT/nix-templates)
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- [the-nix-way/dev-templates](https://github.com/the-nix-way/dev-templates)
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If you think the structure of `flake.nix` is still too complicated and want a simpler way,
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you can consider using the following project, which encapsulates Nix more thoroughly and
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@ -81,7 +96,7 @@ this:
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> is located in the `/nix/store` directory, and these modification commands can only be
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> executed during the Nix build phase.
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- [DavHau/mach-nix](https://github.com/DavHau/mach-nix) (currently unmaintained)
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- [python venv demo](https://github.com/MordragT/nix-templates/blob/master/python-venv/flake.nix)
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- [poetry2nix](https://github.com/nix-community/poetry2nix)
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The advantage of these tools is that they utilize the lock mechanism of Nix Flakes to
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@ -4,14 +4,6 @@ NixOS's reproducibility makes it ideal for building development environments. Ho
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you're used to other distros, you may encounter problems because NixOS has its own logic.
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We'll briefly explain this below.
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On NixOS, it's recommended to only install common tools in the global environment, such as
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`git`, `vim`, `emacs`, `tmux`, `zsh`, etc. The development environment of each language
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should be an independent environment for each project.
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You should NOT install the development environment of each language in the global
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environment. The project environment should be completely isolated from each other and
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will not affect each other.
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In the following sections, we'll introduce how the development environment works in NixOS.
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## Creating a Custom Shell Environment with `nix shell`
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# Dev Environments
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在 NixOS 上,全局环境中(home-manager)可以只安装一些通用的开发工具与 SDK,比如
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`git`、`vim`、`emacs`、`tmux`、`zsh` 等等。对于项目本身的依赖,最好是每个项目都有一个独立
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的 `flake.nix` 用于管理各自的开发环境。
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为了简便,你也可以考虑提前为常用语言创建一些通用的 `flake.nix` 模板,在需要的时候复制模板
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改一改就能用了。
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`neovim` 等编辑器的各种插件本身也会有各种依赖,这些依赖可以考虑通过 home-manager 的
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`programs.neovim.extraPackages` 等参数来将其加入到 IDE 本身的环境中,这样就能保证 IDE 本身
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能正常运行,又不会污染全局环境。
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## 开发环境的配置模板
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前面我们已经学习了构建开发环境的实现原理,但是每次都要自己写一堆重复性较高的 `flake.nix`,
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略显繁琐。
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幸运的是,社区已经有人为我们做好了这件事,如下这个仓库中包含了绝大多数编程语言的开发环境模
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板,直接复制粘贴下来就能用:
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- [the-nix-way/dev-templates](https://github.com/the-nix-way/dev-templates)
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- [MordragT/nix-templates](https://github.com/MordragT/nix-templates)
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- [the-nix-way/dev-templates](https://github.com/the-nix-way/dev-templates)
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如果你觉得 `flake.nix` 的结构还是太复杂了,希望能有更简单的方法,也可以考虑使用下面这个项
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目,它对 Nix 做了更彻底的封装,对用户提供了更简单的定义:
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@ -68,7 +81,7 @@ source ./env/bin/activate
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> `flake.nix` 来安装 Python 依赖!因为数据还是在 `/nix/store` 中,这类修改命令必须在 Nix的
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> 构建阶段才能执行...
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- [DavHau/mach-nix](https://github.com/DavHau/mach-nix)
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- [python venv demo](https://github.com/MordragT/nix-templates/blob/master/python-venv/flake.nix)
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- [poetry2nix](https://github.com/nix-community/poetry2nix)
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这俩工具的好处是,能利用上 Nix Flakes 的锁机制来提升可复现能力,缺点是多了一层封装,底层变
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@ -76,3 +89,11 @@ source ./env/bin/activate
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最后,在一些更复杂的项目上,上述两种方案可能都行不通,这时候最佳的解决方案,就是改用容器
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了,比如 Docker、Podman 等,容器的限制没 Nix 这么严格,能提供最佳的兼容性。
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## Go 开发环境
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Go 是静态链接,天然就少了很多麻烦,基本能在 NixOS 上无痛使用,不需要额外处理。
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## 其他开发环境
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TODO
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的环境搭建经验用在 NixOS 上,可能会遇到许多问题,因为 NixOS 有自己的一套逻辑在,下面我们先
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对此稍作说明。
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在 NixOS 上,全局环境中只建议安装一些通用的工具,比如 `git`、`vim`、`emacs`、`tmux`、`zsh`
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等等,而各语言的开发环境,最好是每个项目都有一个独立的环境。为了简便,你也可以考虑提前为常
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用语言创建一些通用的开发环境,在需要时切换进去。
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总而言之,NixOS 上的开发环境不要一股脑都装在全局,弄成一个个相互隔离、不会互相影响的项目环
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境会优雅很多。
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在本章中我们先学习一下 Nix Flakes 开发环境的实现原理,后面的章节再按使用场景介绍一些更具体
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的内容。
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