pkgsStatic.go

[tomberek]

Issue description

pkgsStatic has flags for C/C++ projects to attempt a static build. Go can do this but usually needs to either

• CGO_ENABLED=0 : easiest if possible
• CGO_ENABLED=0 go build -a -tags netgo -ldflags '-w -extldflags "-static"' : if otherwise needed
• something else with musl?

Steps

Easiest is to place CGO_ENABLED=0 into:
https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/adapters.nix#L46

Another approach is for derivations (or probably buildGoPackage/buildGoModule) to detect that they are in pkgsStatic and set the proper flags/vars.

Technical details

Pros:

• Having an automatic way to get static builds for go projects would be a nice feature, capturing some expert knowledge usable in a wide variety of packages.
• Central definition and update of flags
• musl support to produce static builds of otherwise difficult CGO projects

Cons:

• Increasing complexity in pkgsStatic environment.
• stdenv either has more language-specific details or must signal to the buildGoPackage system that a static build is needed.

[stale]

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[andrew-d]

This is still important to me

[stale]

I marked this as stale due to inactivity. → More info

[azahi]

There's a proposal for Go to include a simple -static build flag to statically compile an executable.

This proposal also has a comment suggesting that currently flags and tags to build a completely statically linked executables differ depending on the OS.