uninstaller hangs on macOS #80

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opened 2026-05-02 01:39:46 +00:00 by ryang-25 · 3 comments

ryang-25 commented

2026-05-02 01:39:46 +00:00

Using the uninstaller /nix/nix-installer uninstall with the latest version of lix. It seems to consistently stop on unmounting the APFS volume (I've done this like 4-5 times)

uname -a: Darwin macbook 24.6.0 Darwin Kernel Version 24.6.0: Mon Jan 19 21:58:37 PST 2026; root:xnu-11417.140.69.708.3~1/RELEASE_ARM64_T8103 arm64

I tried to throw it in lldb but couldn't really crack it. Here's that output.

Process 2858 resuming
 INFO nix-installer v3.95.0
Lix uninstall plan (v3.95.0)

Planner: macos

Configured settings:
* nix_package_url: {"Url":"https://releases.lix.systems/lix/lix-2.95.1/lix-2.95.1-aarch64-darwin.tar.xz"}

Planned actions:
* Unconfigure Nix daemon related settings with launchctl
* Delete file `/Library/LaunchDaemons/systems.lix.nix-installer.nix-hook.plist`
* Remove the Nix configuration from zsh's non-login shells
* Unconfigure the shell profiles
* Remove the Nix configuration in `/etc/nix/nix.conf`
* Unset the default Nix profile
* Remove time machine exclusions
* Remove Nix users and group
* Remove the directory tree in `/nix`
* Remove the APFS volume `Nix Store` on `disk3`


Proceed? ([Y]es/[n]o/[e]xplain):  INFO Revert: Remove directory `/nix/temp-install-dir`
 INFO Revert: Configure Nix daemon related settings with launchctl
 INFO Revert: Create a `launchctl` plist to put Nix into your PATH
 INFO Revert: Configuring zsh to support using Nix in non-interactive shells
 INFO Revert: Configure Nix
 INFO Revert: Configure Time Machine exclusions
 INFO Revert: Create build users (UID 351-382) and group (GID 350)
 INFO Revert: Provision Nix
 INFO Revert: Create an encrypted APFS volume `Nix Store` for Nix on `disk3` and add it to `/etc/fstab` mounting on `/nix`
Process 2858 stopped
  thread #1, name = 'main', queue = 'com.apple.main-thread', stop reason = signal SIGCHLD
    frame #0: 0x000000018ce513cc libsystem_kernel.dylib`__psynch_cvwait + 8
libsystem_kernel.dylib`__psynch_cvwait:
->  0x18ce513cc <+8>:  b.lo   0x18ce513ec    ; <+40>
    0x18ce513d0 <+12>: pacibsp
    0x18ce513d4 <+16>: stp    x29, x30, [sp, #-0x10]!
    0x18ce513d8 <+20>: mov    x29, sp
* thread #2, name = 'tokio-runtime-worker', stop reason = EXC_BAD_ACCESS (code=10, address=0x1003f12f8)
    frame #0: 0x00000001003f12f8 nix-installer`rust_eh_personality + 321428
nix-installer`rust_eh_personality:
->  0x1003f12f8 <+321428>: udf    #0x0
    0x1003f12fc <+321432>: udf    #0x0
    0x1003f1300 <+321436>: udf    #0x0
    0x1003f1304 <+321440>: udf    #0x0
Target 0: (nix-installer) stopped.
(lldb) bt
* thread #2, name = 'tokio-runtime-worker', stop reason = EXC_BAD_ACCESS (code=10, address=0x1003f12f8)
  * frame #0: 0x00000001003f12f8 nix-installer`rust_eh_personality + 321428
    frame #1: 0x00000001003e95c4 nix-installer`rust_eh_personality + 289376
    frame #2: 0x00000001003df688 nix-installer`rust_eh_personality + 248612
    frame #3: 0x00000001003e9ffc nix-installer`rust_eh_personality + 291992
    frame #4: 0x00000001003e19f0 nix-installer`rust_eh_personality + 257676
    frame #5: 0x00000001003deb74 nix-installer`rust_eh_personality + 245776
    frame #6: 0x00000001003f1b44 nix-installer`rust_eh_personality + 323552
    frame #7: 0x00000001003f2114 nix-installer`rust_eh_personality + 325040
    frame #8: 0x00000001003cb818 nix-installer`rust_eh_personality + 167092
    frame #9: 0x000000018ce8fbc8 libsystem_pthread.dylib`_pthread_start + 136

Using the uninstaller `/nix/nix-installer uninstall` with the latest version of lix. It seems to consistently stop on unmounting the APFS volume (I've done this like 4-5 times) `uname -a:` `Darwin macbook 24.6.0 Darwin Kernel Version 24.6.0: Mon Jan 19 21:58:37 PST 2026; root:xnu-11417.140.69.708.3~1/RELEASE_ARM64_T8103 arm64` I tried to throw it in `lldb` but couldn't really crack it. Here's that output. ``` Process 2858 resuming INFO nix-installer v3.95.0 Lix uninstall plan (v3.95.0) Planner: macos Configured settings: * nix_package_url: {"Url":"https://releases.lix.systems/lix/lix-2.95.1/lix-2.95.1-aarch64-darwin.tar.xz"} Planned actions: * Unconfigure Nix daemon related settings with launchctl * Delete file `/Library/LaunchDaemons/systems.lix.nix-installer.nix-hook.plist` * Remove the Nix configuration from zsh's non-login shells * Unconfigure the shell profiles * Remove the Nix configuration in `/etc/nix/nix.conf` * Unset the default Nix profile * Remove time machine exclusions * Remove Nix users and group * Remove the directory tree in `/nix` * Remove the APFS volume `Nix Store` on `disk3` Proceed? ([Y]es/[n]o/[e]xplain): INFO Revert: Remove directory `/nix/temp-install-dir` INFO Revert: Configure Nix daemon related settings with launchctl INFO Revert: Create a `launchctl` plist to put Nix into your PATH INFO Revert: Configuring zsh to support using Nix in non-interactive shells INFO Revert: Configure Nix INFO Revert: Configure Time Machine exclusions INFO Revert: Create build users (UID 351-382) and group (GID 350) INFO Revert: Provision Nix INFO Revert: Create an encrypted APFS volume `Nix Store` for Nix on `disk3` and add it to `/etc/fstab` mounting on `/nix` Process 2858 stopped thread #1, name = 'main', queue = 'com.apple.main-thread', stop reason = signal SIGCHLD frame #0: 0x000000018ce513cc libsystem_kernel.dylib`__psynch_cvwait + 8 libsystem_kernel.dylib`__psynch_cvwait: -> 0x18ce513cc <+8>: b.lo 0x18ce513ec ; <+40> 0x18ce513d0 <+12>: pacibsp 0x18ce513d4 <+16>: stp x29, x30, [sp, #-0x10]! 0x18ce513d8 <+20>: mov x29, sp * thread #2, name = 'tokio-runtime-worker', stop reason = EXC_BAD_ACCESS (code=10, address=0x1003f12f8) frame #0: 0x00000001003f12f8 nix-installer`rust_eh_personality + 321428 nix-installer`rust_eh_personality: -> 0x1003f12f8 <+321428>: udf #0x0 0x1003f12fc <+321432>: udf #0x0 0x1003f1300 <+321436>: udf #0x0 0x1003f1304 <+321440>: udf #0x0 Target 0: (nix-installer) stopped. (lldb) bt * thread #2, name = 'tokio-runtime-worker', stop reason = EXC_BAD_ACCESS (code=10, address=0x1003f12f8) * frame #0: 0x00000001003f12f8 nix-installer`rust_eh_personality + 321428 frame #1: 0x00000001003e95c4 nix-installer`rust_eh_personality + 289376 frame #2: 0x00000001003df688 nix-installer`rust_eh_personality + 248612 frame #3: 0x00000001003e9ffc nix-installer`rust_eh_personality + 291992 frame #4: 0x00000001003e19f0 nix-installer`rust_eh_personality + 257676 frame #5: 0x00000001003deb74 nix-installer`rust_eh_personality + 245776 frame #6: 0x00000001003f1b44 nix-installer`rust_eh_personality + 323552 frame #7: 0x00000001003f2114 nix-installer`rust_eh_personality + 325040 frame #8: 0x00000001003cb818 nix-installer`rust_eh_personality + 167092 frame #9: 0x000000018ce8fbc8 libsystem_pthread.dylib`_pthread_start + 136 ```

ryang-25 commented

2026-05-02 16:50:09 +00:00

Author

It seems to work if the uninstaller is copied somewhere other than /nix. I don't think it should be trying to force unmount when the installer lives on /nix.

It seems to work if the uninstaller is copied somewhere other than `/nix`. I don't think it should be trying to force unmount when the installer lives on `/nix`.