Merge pull request #676 from sseu-buhzzi/38203017/build-nix-flake

build: add a nix flake to build and run DanXi on NixOS

Author: w568w

README.md

@@ -69,6 +69,20 @@ sudo pacman -S danxi # 最新稳定版
 sudo pacman -S danxi-git # 最新 Git 版
 ```
 
+### NixOS
+
+使用 Nix flake 构建和运行：
+
+```shell
+# 直接运行（不安装）
+nix run github:DanXi-Dev/DanXi-nix
+```
+
+```shell
+# 进入开发环境
+nix develop github:DanXi-Dev/DanXi-nix
+```
+
 ### 其他 Linux 发行版
 
 打开 [release 页面](https://github.com/DanXi-Dev/DanXi/releases/latest) 下载最新版 zip 压缩包，解压运行即可。
@@ -130,6 +144,25 @@ dart run build_runner build --delete-conflicting-outputs
 
 然后运行  `flutter run [ios/android]`即可运行应用。
 
+### Nix Flake 构建
+
+本项目提供 Nix flake，可在 NixOS 上构建（产物预设在 `./result/` 中）：
+
+```shell
+# Linux 桌面版
+nix build github:DanXi-Dev/DanXi-nix
+```
+
+```shell
+# Android APK
+nix build github:DanXi-Dev/DanXi-nix#android
+```
+
+```shell
+# Android APK，另一种方式
+nix develop github:DanXi-Dev/DanXi-nix -c flutter build apk
+```
+
 ## 赞助
 
 由于 Apple Developer Program 费用（发布应用至 App Store 和 TestFlight 所必需）费用较高，如果您希望赞助我们，请通过邮件联系我们！

README_EN.md

@@ -74,6 +74,20 @@ You can install it from [AUR](https://aur.archlinux.org/danxi-git.git) or [archl
 sudo pacman -S danxi-git
 ```
 
+### NixOS
+
+Using the Nix flake:
+
+```shell
+# Run directly (without installing)
+nix run github:DanXi-nix/DanXi-nix
+```
+
+```shell
+# Enter development shell
+nix develop github:DanXi-Dev/DanXi-nix
+```
+
 ### Other Linux distributions
 
 Go to [release page](https://github.com/DanXi-Dev/DanXi/releases), just download the zip file and
@@ -135,3 +149,23 @@ dart run build_runner build --delete-conflicting-outputs
 ```
 
 and then  `flutter run [ios/android]` to start the app.
+
+### Build with Nix Flake
+
+This project provides a Nix flake for builds on NixOS (this output will be in `./result/`):
+
+```shell
+# Linux desktop
+nix build github:DanXi-Dev/DanXi-nix
+```
+
+```shell
+# Android APK
+nix build github:DanXi-Dev/DanXi-nix#android
+```
+
+```shell
+# cd DanXi-Dev/DanXi
+# Android APK, another method
+nix develop github:DanXi-Dev/DanXi-nix -c flutter build apk
+```