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Nix on macOS

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“There are still many issues with the Darwin platform but most of it is quite usable.” — http://yves.gnu-darwin.org180 Servers

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12 Nov 2025
@jonhermansen:matrix.orgjonhermansenIt makes me wonder what the hell I did to those files so that they didn't have a known hash.01:58:38
@samasaur:matrix.orgsamasaurwe just include known hashes for the macOS-provided, upstream nix installer–provided, and determinate nix installer–provided zshrc, zprofile, bashrc, etc.01:58:42
@jonhermansen:matrix.orgjonhermansenThat makes good sense, and its reasonable that it asked me if I wanted to clobber them in that case!01:59:31
@samasaur:matrix.orgsamasaur most of them are listed here, and you can see how they are set 02:00:19
@samasaur:matrix.orgsamasaurnot entirely uncommon. often global installs of things (via non-nix) will modify these files so that the tools are in PATH02:01:13
@jonhermansen:matrix.orgjonhermansen It looks like I have two backups. One which was before I installed Nix, and the other was the one that didn't match a known hash.

user@desktop:~/ > cat /etc/bashrc.backup-before-nix 
# System-wide .bashrc file for interactive bash(1) shells.
if [ -z "$PS1" ]; then
   return
fi

PS1='\h:\W \u\$ '
# Make bash check its window size after a process completes
shopt -s checkwinsize

[ -r "/etc/bashrc_$TERM_PROGRAM" ] && . "/etc/bashrc_$TERM_PROGRAM"
user@desktop:~/ > cat /etc/bashrc.bak              

# Nix
if [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then
  . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'
fi
# End Nix

# System-wide .bashrc file for interactive bash(1) shells.
if [ -z "$PS1" ]; then
   return
fi

PS1='\h:\W \u\$ '
# Make bash check its window size after a process completes
shopt -s checkwinsize

[ -r "/etc/bashrc_$TERM_PROGRAM" ] && . "/etc/bashrc_$TERM_PROGRAM"
02:03:31
@samasaur:matrix.orgsamasaur that's actually the happy path to some extent, because the main alternative (/etc/paths.d) is ignored by nix-darwin 02:03:31
@samasaur:matrix.orgsamasaurat least this way you catch it02:03:37
@samasaur:matrix.orgsamasaurhmm. what installer did you use?02:04:14
@jonhermansen:matrix.orgjonhermansenThe recommended multi-user one from nixos.org. I saved it to disk before running it too. The one from https://nixos.org/nix/install02:05:35
@samasaur:matrix.orgsamasaurhuh02:05:45
@samasaur:matrix.orgsamasaurwhat's the SHA256 hash of the one with Nix in it?02:07:32
@samasaur:matrix.orgsamasaur any chance it happens to be 6be16cf7c24a3c6f7ae535c913347a3be39508b3426f5ecd413e636e21031e66? 02:07:48
@samasaur:matrix.orgsamasaurim guessing no bc if so you should not have seen this error02:08:09
@jonhermansen:matrix.orgjonhermansenThe fact that I messed with the Nix installer... makes me think it was something stupid that I did. I wasn't aware of the hash check, hence my confusion. I don't think I edited either file, or installed anything that would edit those files. So something happened to BOTH files in between the time I installed Nix and tried nix-darwin02:08:13
@jonhermansen:matrix.orgjonhermansen
user@desktop:~/ > sha256sum /etc/bashrc.backup-before-nix
444c716ac2ccd9e1e3347858cb08a00d2ea38e8c12fdc5798380dc261e32e9ef  /etc/bashrc.backup-before-nix
user@desktop:~/ > sha256sum /etc/bashrc.bak              
8b5e3466922d1ae34bc145e21c7e53e7329a7a7b58b148b436bd954d5e651ac3  /etc/bashrc.bak
user@desktop:~/ > sha256sum /etc/bashrc    
fd20bcfedb93eef9f3890c9bd7a3516a70373bd026f829a23c174a27a4f94101  /etc/bashrc
user@desktop:~/ > sha256sum /etc/zshrc.backup-before-nix 
4d1ab5704f9d167a042fecac0d056c8a79a8ebd71e032d3489536c8db9ffe3e0  /etc/zshrc.backup-before-nix
user@desktop:~/ > sha256sum /etc/zshrc.bak              
cf0f7b7775b4c058d6085d9e7e57d58c307ca43730f8e4d921a9ef4e530e7e16  /etc/zshrc.bak
user@desktop:~/ > sha256sum /etc/zshrc    
ef9773f1f3175cc8fbddea7fa40a9f85e55ab23bf2701ab0ca747ba939a54dd2  /etc/zshrc
02:08:31
@samasaur:matrix.orgsamasaur yeah looks like the .backup-before-nix ones are in our known files and the .bak ones are not. i am inclined to say that somehow you did cause this by messing with the installer 02:11:21
@samasaur:matrix.orgsamasauri mean it seems like it's just reordering blocks of that file, which should be functionally identical even though it will not match the hash02:11:54
@samasaur:matrix.orgsamasaurunsure how exactly that would happen though02:12:00
@jonhermansen:matrix.orgjonhermansenI really appreciate the help, thank you for taking a look. I'm glad it was just me that caused the problem 😆02:15:46
@samasaur:matrix.orgsamasaurno problem! glad you have a path forward!02:17:05
@jonhermansen:matrix.orgjonhermansenI'm taking your advice and will modify the darwin-store plist. I hope that the fact I have both /nix AND /nix/store is not a problem. wait4path may try to start nix-daemon too early... hmm02:17:58
@samasaur:matrix.orgsamasaur it's wait4path /nix/store i think so hopefully it's OK 02:18:19
@inayet:matrix.orgInayet changed their display name from inayet to Inayet.12:37:54
@niklaskorz:matrix.orgniklaskorzhttps://brew.sh/2025/11/12/homebrew-5.0.0/19:36:41
@niklaskorz:matrix.orgniklaskorz

Homebrew prefers LLVM’s clang over gcc on macOS.

they didn't before? wow

19:36:54
@toonn:matrix.orgtoonn GCC on macOS has been an alias for Clang for years, no? 21:47:29
@samasaur:matrix.orgsamasaurfrom the Xcode toolchain, yes21:50:49
@samasaur:matrix.orgsamasaurI guess that's referring to what happens when you have GCC and clang installed via homebrew and you install something that has to build from source?21:51:43
@reckenrode:matrix.orgRandy Eckenrodehttps://github.com/Homebrew/brew/pull/2069622:06:33

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