gomod2nix/README.md

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# Gomod2nix
Convert applications using Go modules -> Nix
## Usage
From the Go project directory execute:
``` bash
$ gomod2nix
```
This will create `gomod2nix.toml` that's used like so
``` nix
let
pkgs = import <nixpkgs> {
overlays = [
(self: super: {
buildGoApplication = super.callPackage ./builder { };
})
];
};
in pkgs.buildGoApplication {
pname = "gomod2nix-example";
version = "0.1";
src = ./.;
modules = ./gomod2nix.toml;
}
```
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For more in-depth usage check the [Getting Started](./docs/getting-started.md) and the [Nix API reference](./docs/nix-reference.md) docs.
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## FAQ
### Why not continue work on vgo2nix?
Vgo2nix was built on top of the old Nixpkgs build abstraction `buildGoPackage`, this abstraction was built pre-modules and suffered from some fundamental design issues with modules, such as only allowing a single version of a Go package path inside the same build closure, something that Go itself allows for.
We need a better build abstraction that takes Go modules into account, while remaining [import from derivation](https://nixos.wiki/wiki/Import_From_Derivation)-free.
### Will this be included in Nixpkgs
Yes. Once the API is considered stable.
## Motivation
The [announcement blog post](https://www.tweag.io/blog/2021-03-04-gomod2nix/) contains comparisons with other Go build systems for Nix and additional notes on the design choices made.
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## License
This project is licensed under the MIT License. See the [LICENSE](LICENSE)
file for details.