ARMv7l builds on cachix

Hi, just wondering if this is still alive/being updated and what revision it’s on at the moment. Some of the wiki information for NixOS on ARM seems to be a bit outdated. After following the instructions on NixOS on ARM - NixOS Wiki, I can’t seem to rebuild with a channel updated to whatever nixos-unstable is on now.

I get an error log ending in

...
  /nix/store/mvingdc00i4kybz7f2xy9dc2xv0pni1b-boost-1.67.0.drv
  /nix/store/mvs8pyjprdpbgkcnacw9lvp8yk9zdgnw-libsodium-1.0.16.drv
  /nix/store/x9r4306kxabc62hrbj5zzhw755myh2k1-source.drv
  /nix/store/qnd60yc290avvg1d98n7w2v4lbnb7czj-brotli-1.0.7.drv
  /nix/store/px98kyyshqi2cnh0wsdlsj2fkh72zgf7-busybox-1.30.1.tar.bz2.drv
  /nix/store/y23ddv8k2cyzs05iihq5wrk4ks9fiysc-busybox-1.30.1.drv
  /nix/store/kl4d2lhm2g1m641w0dcfaw6382dbnylx-nix-2.2.drv
building '/nix/store/c8svmxmwjkzvwszy8ga7x2fwx0qbmm10-bash44-001.drv'...
building '/nix/store/f30binazxhx8g0xkiav6lglp29h4a164-bash44-002.drv'...
building '/nix/store/6kxn0zj4ipzpg2p4csxzy64njknwydy6-autoconf-2.69.tar.xz.drv'...
building '/nix/store/blxkv9dzwnkrvq2chdy307sd9gz5mn3k-automake-1.16.1.tar.xz.drv'...
fixed-output derivation produced path '/nix/store/b532v0f48jbhw151h7v8v6ab8vshlj4z-autoconf-2.69.tar.xz' with sha256 hash '05s19ghbic9whsqsgja87qfjibm0i350daz8i2dawd2xymyc6yjg' instead of the expected hash '113nlmidxy9kjr45kg9x3ngar4951mvag1js2a3j8nxcz34wxsv4'
cannot build derivation '/nix/store/drsa84a2791ali0fgnnf77a69yw1apw6-autoconf-2.69.drv': 1 dependencies couldn't be built
building '/nix/store/q8hxz4f402ps0vwhj3sgfyp6x0ss35sv-bash44-003.drv'...
building '/nix/store/djmmx28jvbngp9wa15z4xasllaaqd1z0-bash44-004.drv'...
cannot build derivation '/nix/store/8hlfh1k5mhcn67hlrd25jwpdldiyjyqy-hook.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/9y5b9xbhji6vszxkdk2xpl5037k89vz1-patch-2.7.6.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/64d40fiyz7ffqs1hzmmwaz1vr9vqn1av-stdenv-linux.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/dpvbx7rxvfam7jz4iszljwnihdhh3fl5-stdenv-linux.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/kl4d2lhm2g1m641w0dcfaw6382dbnylx-nix-2.2.drv': 1 dependencies couldn't be built
error: build of '/nix/store/kl4d2lhm2g1m641w0dcfaw6382dbnylx-nix-2.2.drv' failed

I’m not sure why I’m getting hash errors; is it possible something broke in nixpkgs between master and ca2ba44cab47767c8127d1c8633e2b581644eb8f (which is what @dezgeg’s site caches, and what you get after the first rebuild)?

2019-04-07T12:00:00Z Edit: I found the cause of the issue #2393; I have updated the wiki accordingly. Nonetheless, it would still be nice to know which revision is on https://arm.cachix.org/ at the moment.