@szeck87 Could you check if this fixes your problem?

I'm out of town without my laptop until later tonight, I'll check it then.

No attempt on aarch64-linux (full log)

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

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.

Success on x86_64-linux (full log)

Attempted: atom, atom-beta

/nix/store/xcb1a8y3naarfga51yh3ackz1hzf2f6x-atom-1.28.0/share/atom/resources/app/apm/node_modules/open/vendor/xdg-open: interpreter directive changed from "/bin/sh" to "/nix/store/8zkg9ac4s4alzyf4a8kfrig1j73z66dw-bash-4.4-p23/bin/sh"
/nix/store/xcb1a8y3naarfga51yh3ackz1hzf2f6x-atom-1.28.0/share/atom/resources/app/apm/node_modules/ajv/scripts/prepare-tests: interpreter directive changed from "/usr/bin/env sh" to "/nix/store/8zkg9ac4s4alzyf4a8kfrig1j73z66dw-bash-4.4-p23/bin/sh"
/nix/store/xcb1a8y3naarfga51yh3ackz1hzf2f6x-atom-1.28.0/share/atom/resources/app/apm/node_modules/ajv/scripts/travis-gh-pages: interpreter directive changed from "/usr/bin/env bash" to "/nix/store/8zkg9ac4s4alzyf4a8kfrig1j73z66dw-bash-4.4-p23/bin/bash"
/nix/store/xcb1a8y3naarfga51yh3ackz1hzf2f6x-atom-1.28.0/bin/.atom-wrapped: interpreter directive changed from "/bin/bash" to "/nix/store/8zkg9ac4s4alzyf4a8kfrig1j73z66dw-bash-4.4-p23/bin/bash"
checking for references to /build in /nix/store/xcb1a8y3naarfga51yh3ackz1hzf2f6x-atom-1.28.0...
cannot find section .dynamic
file /nix/store/xcb1a8y3naarfga51yh3ackz1hzf2f6x-atom-1.28.0/share/atom/atom had a PT_GNU_STACK program header, converted
file /nix/store/xcb1a8y3naarfga51yh3ackz1hzf2f6x-atom-1.28.0/share/atom/resources/app/apm/bin/node had a PT_GNU_STACK program header, converted
/nix/store/xcb1a8y3naarfga51yh3ackz1hzf2f6x-atom-1.28.0
/nix/store/yxi3ynllf5cvjh61cmb1gad98q6ky2vi-atom-beta-1.29.0-beta0

@Synthetica9 how do I add a channel to Nix pointing to this change to test out?

Assuming you have already cloned the nixpkgs repo:

git remote add synthetica https://github.com/Synthetica9/nixpkgs
git fetch synthetica
git checkout synthetica/atom-fix-42730
nix-build . -A atom -A atom-beta 

hmu if you need any more help

OK, I'm not sure if the problem is fixed, or if I didn't build it properly, or if there is some other cause of this error. https://travis-ci.org/szeck87/atom-beautify/jobs/398692985

This seems to be a different error, with the problem being that nix-build only builds the derivation, but doesn't make it available in PATH. If you want that, you'd do:

git clone https://github.com/NixOS/nixpkgs.git && cd nixpkgs && git remote add synthetica https://github.com/Synthetica9/nixpkgs && git fetch synthetica && git checkout synthetica/atom-fix-42730 && nix-env -I . -i atom atom-beta

OK, that got me past that error. But either it didn't build atom and atom-beta from the repository or this fix didn't work: https://travis-ci.org/szeck87/atom-beautify/jobs/399155559 and https://travis-ci.org/szeck87/atom-beautify/jobs/399155556

@Synthetica9 I have a Docker container running Travis to help debug. Let me know what to look for.

@Synthetica9 I ran Travis using an ugly hack (curl'ing your changed files right into default.nix and env.nix under the .nix-defexpr directory) and it seems to work. nix-env -I . -i atom atom-beta still seemed to install from unstable and not from the cloned repo.

Is this ready to merge?

@xeji Yeah, I believe so.

@xeji not sure what happened with the last build, but unstable looks to be based from 8d48824.

@szeck87 the nixos-unstable channel lags behind master because it only advances if a defined set of tests succeed on Hydra, see: https://hydra.nixos.org/job/nixos/trunk-combined/tested#tabs-constituents

The last evaluation with all tests passed was https://hydra.nixos.org/build/76782747 , three days ago.
Right now other failures are blocking the channel. Please be patient, or install the latest version from your own clone of master 😄

@xeji I understand, but the commit it's using now is from 25 days ago. Is it looking from the 6/24 release? https://nixos.org/channels/nixpkgs-unstable

I see. Looks like the mirror lags behind the git channel. Don't know why. Opened #43077 .