pixie: refactor to allow macOS build

[alekcz]

Motivation for this change

• Adding macOS support for pixie (pixie has been support on macOS for quite a while already)
• Updating the name as discussed on issue 445 (support nix package pixie-lang/pixie#455)

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option build-use-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/)
• Fits CONTRIBUTING.md.

---

[joachifm]

@GrahamcOfBorg build pixie

[GrahamcOfBorg]

Failure for system: aarch64-linux

Package ‘pixie-0-r1356-jit’ in /var/lib/gc-of-borg/nix-test-rs-1/repo/38dca4e3aa6bca43ea96d2fcc04e8229/builder/grahamc-aarch64-community-1/pkgs/development/interpreters/pixie/default.nix:79 is not supported on ‘aarch64-linux’, refusing to evaluate.

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

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

[GrahamcOfBorg]

Success for system: x86_64-darwin

Warning: write already refers to <inst pixie.stdlib.Var>
Warning: ISeekableStream already refers to <inst pixie.stdlib.Var>
Warning: write-byte already refers to <inst pixie.stdlib.Var>
Compiling  pixie/string.pxi
installing
post-installation fixup
strip is /nix/store/bhfkh37smh9lc5bngdha6zx98k6w6cgd-cctools-binutils-darwin/bin/strip
stripping (with command strip and flags -S) in /nix/store/j2cvsmygajbi1xinxk444bbnxzjfpikf-pixie-0-r1356-jit/bin
patching script interpreter paths in /nix/store/j2cvsmygajbi1xinxk444bbnxzjfpikf-pixie-0-r1356-jit
/nix/store/j2cvsmygajbi1xinxk444bbnxzjfpikf-pixie-0-r1356-jit

[GrahamcOfBorg]

Success for system: x86_64-linux

Compiling  pixie/parser/json.pxi
installing
post-installation fixup
shrinking RPATHs of ELF executables and libraries in /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit
shrinking /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit/share/pixie-vm
strip is /nix/store/wxn5gn8amxm1w0ikcx4gbs8a17wvss4j-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit/bin 
patching script interpreter paths in /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit
checking for references to /tmp/nix-build-pixie-0-r1356-jit.drv-0 in /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit...
/nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit

[alekcz]

@joachifm any chance I could ask Graham for a new build?

[joachifm]

@GrahamcOfBorg build pixie

[GrahamcOfBorg]

Success for system: x86_64-darwin

/nix/store/j2cvsmygajbi1xinxk444bbnxzjfpikf-pixie-0-r1356-jit

[GrahamcOfBorg]

Failure for system: aarch64-linux

Package ‘pixie-0-r1356-jit’ in /var/lib/gc-of-borg/nix-test-rs-3/repo/38dca4e3aa6bca43ea96d2fcc04e8229/builder/grahamc-aarch64-community-3/pkgs/development/interpreters/pixie/default.nix:79 is not supported on ‘aarch64-linux’, refusing to evaluate.

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

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

[GrahamcOfBorg]

Success for system: x86_64-linux

Compiling  pixie/parser/json.pxi
installing
post-installation fixup
shrinking RPATHs of ELF executables and libraries in /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit
shrinking /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit/share/pixie-vm
strip is /nix/store/wxn5gn8amxm1w0ikcx4gbs8a17wvss4j-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit/bin 
patching script interpreter paths in /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit
checking for references to /tmp/nix-build-pixie-0-r1356-jit.drv-0 in /nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit...
/nix/store/vkhllrhdklrmbnzzgkix330a5pyc9ywh-pixie-0-r1356-jit

[alekcz]

@joachifm aarch64-linux is not on platforms list but Graham keeps trying to build on it. I'm not sure how to fix the build error. Any ideas?

[joachifm]

@alekcz I'd ignore it for now

[bendlas]

Great! Thanks for taking that on. I don't have a mac, so I'll have to go with your assessment, but one question: Why did you remove i686-linux as a platform? Isn't it supported by pixie?

[alekcz]

@bendlas on pixie 0.1 yes. But with support i686 is being phased out in general, we'd be digging a hole. Also things like libuv and pypy will get harder and harder to support on i686.

https://www.archlinux.org/news/the-end-of-i686-support/

[bendlas]

@alekcz have you had any actual breakage due to i686 being supported? If it's not related to OSX support, I'd ask you to submit a separate PR for that.

[alekcz]

@bendlas done

[bendlas]

OK.

Strictly speaking, the executable name change is out of scope for an OSX PR, as well,
but I'll accept it as part of this, because it is based on upstream consensus (and because pixie is not exactly a high-stakes package, right now).
However, please keep this idea of separating concerns in mind, when filing further pull requests, as it makes reviewer's lifes a lot easier.

Thanks and welcome to NixOS!

[anka-213]

This change made dust stop working, since that has a reference to the path bin/pixie-vm. It should be a simple 1-line fix here:

nixpkgs/pkgs/development/interpreters/pixie/dust.nix

Line 14 in 92a047a

pixiePath="${pixie}/bin/pixie-vm" \

---

I'm not really interested in this package, I just noticed it when accidentally installing this while trying to install the other package named "dust".