reptyr: enable on 32-bit ARM Linux and x86 FreeBSD

[lopsided98]

Motivation for this change

Reptyr should not restricted to specific architectures. I tested it and it works fine on armv7l.

Things done

Made the platforms less restrictive, allowing it to run on all Linux architectures. MacOS is not supported.

cc @7c6f434c

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Assured whether relevant documentation is up to date
• Fits CONTRIBUTING.md.

---

[thoughtpolice]

@GrahamcOfBorg build reptyr

[GrahamcOfBorg]

Success on x86_64-linux (full log)

Attempted: reptyr

Partial log (click to expand)

these paths will be fetched (0.02 MiB download, 0.05 MiB unpacked):
  /nix/store/2dznhkbbrjjcppm6fxwh6n8h5ia5kpzw-reptyr-0.6.2
copying path '/nix/store/2dznhkbbrjjcppm6fxwh6n8h5ia5kpzw-reptyr-0.6.2' from 'https://cache.nixos.org'...
/nix/store/2dznhkbbrjjcppm6fxwh6n8h5ia5kpzw-reptyr-0.6.2

[GrahamcOfBorg]

Failure on aarch64-linux (full log)

Attempted: reptyr

Partial log (click to expand)

build flags: SHELL=/nix/store/bpspdmsl0yys24gs70flsvcw3wcnl7lx-bash-4.4-p23/bin/bash PREFIX=\$\(out\)
gcc -Wall -Werror -D_GNU_SOURCE -g   -c -o reptyr.o reptyr.c
In file included from platform/platform.h:28:0,
                 from reptyr.c:37:
platform/../ptrace.h:66:14: error: field 'user' has incomplete type
  struct user user;
              ^~~~
make: *** [<builtin>: reptyr.o] Error 1
builder for '/nix/store/4lx8qfb8sik1y32dspanm90sv9ahrhcj-reptyr-0.6.2.drv' failed with exit code 2
error: build of '/nix/store/4lx8qfb8sik1y32dspanm90sv9ahrhcj-reptyr-0.6.2.drv' failed

[GrahamcOfBorg]

No attempt on x86_64-darwin (full log)

The following builds were skipped because they don't evaluate on x86_64-darwin: reptyr

Partial log (click to expand)

a) For `nixos-rebuild` you can set
  { nixpkgs.config.allowUnsupportedSystem = true; }
in configuration.nix to override this.

b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
  { allowUnsupportedSystem = true; }
to ~/.config/nixpkgs/config.nix.

[lopsided98]

Oops, didn't test this on aarch64. I guess it only supports 32-bit ARM.

[lopsided98]

I updated the platforms to support 32-bit ARM, and added freebsd as well because it is supposedly supported, although I don't have a machine to test it with.

I also updated the description to the current GitHub description, which reflects that fact that it is no longer only supported on Linux.

[7c6f434c]

Would with stdenv.lib.platforms; linux ++ freebsd work then?

[c0bw3b]

platforms.linux would include aarch64-linux and it seems it fails to build on ARMv8

[thoughtpolice]

@GrahamcOfBorg build reptyr

[GrahamcOfBorg]

No attempt on aarch64-linux (full log)

The following builds were skipped because they don't evaluate on aarch64-linux: reptyr

Partial log (click to expand)

a) For `nixos-rebuild` you can set
  { nixpkgs.config.allowUnsupportedSystem = true; }
in configuration.nix to override this.

b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
  { allowUnsupportedSystem = true; }
to ~/.config/nixpkgs/config.nix.

[GrahamcOfBorg]

No attempt on x86_64-darwin (full log)

The following builds were skipped because they don't evaluate on x86_64-darwin: reptyr

Partial log (click to expand)

a) For `nixos-rebuild` you can set
  { nixpkgs.config.allowUnsupportedSystem = true; }
in configuration.nix to override this.

b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
  { allowUnsupportedSystem = true; }
to ~/.config/nixpkgs/config.nix.

[GrahamcOfBorg]

Success on x86_64-linux (full log)

Attempted: reptyr

Partial log (click to expand)

these paths will be fetched (0.02 MiB download, 0.05 MiB unpacked):
  /nix/store/la1lrgd8lq5jfxfmxy8fxfzcq1jwgbyj-reptyr-0.6.2
copying path '/nix/store/la1lrgd8lq5jfxfmxy8fxfzcq1jwgbyj-reptyr-0.6.2' from 'https://cache.nixos.org'...
/nix/store/la1lrgd8lq5jfxfmxy8fxfzcq1jwgbyj-reptyr-0.6.2