Cannot run the debugger in NixOS

[namnd]

1. What version of Delve are you using (dlv version)?

Delve Debugger
Version: 1.9.0
Build: $Id: 69310c2f438e492f892d6af22e8e62c8ea1e9d8d

2. What version of Go are you using? (go version)?

go version go1.18.2 linux/arm64

3. What operating system and processor architecture are you using?

Linux devbox 5.15.55 #1-NixOS SMP Fri Jul 15 08:13:00 UTC 2022 aarch64 GNU/Linux

4. What did you do?

Start debugging test

5. What did you expect to see?

6. What did you see instead?

Build Error: go test -c -o /home/../../__debug_bin -gcflags all=-N -l /home/../../**_test.go

runtime/cgo

In file included from /nix/store/y7g7iskbmzpy7wxc4v4sxqg0p3z5w5b4-glibc-2.34-210-dev/include/bits/libc-header-start.h:33,
from /nix/store/y7g7iskbmzpy7wxc4v4sxqg0p3z5w5b4-glibc-2.34-210-dev/include/stdlib.h:25,
from _cgo_export.c:3:
/nix/store/y7g7iskbmzpy7wxc4v4sxqg0p3z5w5b4-glibc-2.34-210-dev/include/features.h:412:4: error: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Werror=cpp]
412 | # warning _FORTIFY_SOURCE requires compiling with optimization (-O)
| ^~~~~~~
cc1: all warnings being treated as errors (exit status 2)

[aarzilli]

See NixOS/nixpkgs#18995. You can probably work around this by setting CGO_CFLAGS to something (it doesn't matter what).

[namnd]

Thanks @aarzilli i was able to work around by adding hardeningDisable = [ "all" ]; to the shell.nix

[W1M0R]

The NixOS Wiki also suggest adding the following line to shell.nix:

hardeningDisable = [ "fortify" ];

Related:

1. https://nixos.wiki/wiki/C#Hardening_flags
2. https://nixos.org/manual/nixpkgs/stable/#sec-hardening-in-nixpkgs
3. The hardeningDisable environment variable does nothing NixOS/nixpkgs#101979

[adamcstephens]

the official NixOS wiki is now here: https://wiki.nixos.org/wiki/Go#Using_cgo_on_NixOS

[kelvincesar]

I can confirm that I was having this problem when debuging a golang program with delve on vscode.

Added the hardeningDisable into my shell.nix and now it is working. Thanks!

pkgs.mkShell {
  hardeningDisable = [ "fortify" ]; 
  ....
}