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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.org199 Servers

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25 Mar 2026
@emilazy:matrix.orgemilythey want you to upgrade :)17:29:06
@nasso:matrix.orgnassohell yeah it did thanks! i thought i did something wrong but it turns out i only really tried on shitty wifis (hotel and now train)17:29:22
@nasso:matrix.orgnasso lk scared of keeping the bitwig dot com url i dont trust them keeping it up 17:30:19
@nasso:matrix.orgnassobut yeha okay thank you emily once again17:30:21
@nasso:matrix.orgnassoill get rid of the brew-nix overlay lmao17:30:31
@nasso:matrix.orgnassoyeah okay this clears up some things for me cuz i see a lot of projects use overlay when i feel like they shouldn't (e.g. here they're using an overlay to add something to nixpkgs, but they aren't modifying anything in nixpkgs, so like, whats the point)17:37:17
@nasso:matrix.orgnasso* yeah okay this clears up some things for me cuz i see a lot of projects use overlays when i feel like they shouldn't (e.g. here they're using an overlay to add something to nixpkgs, but they aren't modifying anything in nixpkgs, so like, whats the point)17:37:26
@emilazy:matrix.orgemilycould override it with a web.archive.org link17:47:00
@emilazy:matrix.orgemily overlays compose better and can avoid instantiating a bunch of different copies of Nixpkgs (because of flakes' awful transitive dep handling / follows messes etc.), but yeah they also have an awkward shared global namespace like that 17:47:34
@nasso:matrix.orgnasso yeah but also i have no idea how i would do that 😶 17:48:00
@emilazy:matrix.orgemily in particular that specific overlay still uses the nixpkgs flake input rather than even using final as the package set, so it won't "see" other overlays 17:48:04
@emilazy:matrix.orgemily probably .overrideAttrs { src = fetchurl …; }, but I'm not sure exactly how the brew-nix derivations are structured :) 17:48:19
@nasso:matrix.orgnasso
avoid instantiating a bunch of different copies of Nixpkgs
oooh is it because the overlay can use final (or prev) instead of a separate nixpkgs instance?
17:51:25
@emilazy:matrix.orgemily it's because it picks it out of packages which refers to inputs.nixpkgs.legacyPackages 17:51:43
@emilazy:matrix.orgemily where it should be using final instead (which would contain changes from other overlays) 17:51:53
@emilazy:matrix.orgemily overlays is meant to not use a nixpkgs flake input 17:52:02
@nasso:matrix.orgnassoyeah okay that makes sense to me so that means im getting it17:53:39
@nasso:matrix.orgnassogreat17:53:48
26 Mar 2026
@k900:0upti.meK900
      > : && /nix/store/s7qlr26bmc6n4r607scz8iiwcg6yg4ic-clang-wrapper-21.1.8/bin/clang++ -DNDEBUG -O2 -arch arm64 -isysroot /nix/store/g0vv53n49k0kvnl5p4ag3bygypbvf8sh-apple-sdk-15.5/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -mmacosx-version-min=14.0 -Wl,-headerpad_max_install_names -fPIE -Xlinker -pie tools/qmltestrunner/CMakeFiles/qmltestrunner.dir/qmltestrunner_autogen/mocs_compilation.cpp.o tools/qmltestrunner/CMakeFiles/qmltestrunner.dir/main.cpp.o -o bin/qmltestrunner -F/nix/store/vp7mzysndh7vmqp4rqmigxl801x1pvn7-qtdeclarative-6.11.0/.build/qtdeclarative-everywhere-src-6.11.0/build/lib -F/nix/store/0rzzw62rkc2bga3spjs73g0km36i0lda-qtbase-6.11.0/lib -Wl,-rpath,/nix/store/vp7mzysndh7vmqp4rqmigxl801x1pvn7-qtdeclarative-6.11.0/.build/qtdeclarative-everywhere-src-6.11.0/build/lib  lib/QtQuickTest.framework/Versions/A/QtQuickTest  /nix/store/0rzzw62rkc2bga3spjs73g0km36i0lda-qtbase-6.11.0/lib/QtTest.framework/Versions/A/QtTest  -framework Security  -framework ApplicationServices  -framework Foundation  /nix/store/0rzzw62rkc2bga3spjs73g0km36i0lda-qtbase-6.11.0/lib/QtGui.framework/Versions/A/QtGui  -framework AppKit  -framework OpenGL  -framework ImageIO  -framework Metal  lib/QtQml.framework/Versions/A/QtQml  /nix/store/0rzzw62rkc2bga3spjs73g0km36i0lda-qtbase-6.11.0/lib/QtNetwork.framework/Versions/A/QtNetwork  /nix/store/0rzzw62rkc2bga3spjs73g0km36i0lda-qtbase-6.11.0/lib/QtCore.framework/Versions/A/QtCore  -framework IOKit  -framework DiskArbitration  -framework UniformTypeIdentifiers && cd /nix/store/vp7mzysndh7vmqp4rqmigxl801x1pvn7-qtdeclarative-6.11.0/.build/qtdeclarative-everywhere-src-6.11.0/build/tools/qmltestrunner && codesign --remove-signature /nix/store/vp7mzysndh7vmqp4rqmigxl801x1pvn7-qtdeclarative-6.11.0/.build/qtdeclarative-everywhere-src-6.11.0/build/bin/qmltestrunner && codesign --sign - --entitlements /nix/store/0rzzw62rkc2bga3spjs73g0km36i0lda-qtbase-6.11.0/lib/cmake/Qt6/macos/test.entitlements.plist /nix/store/vp7mzysndh7vmqp4rqmigxl801x1pvn7-qtdeclarative-6.11.0/.build/qtdeclarative-everywhere-src-6.11.0/build/bin/qmltestrunner
       > --sign is required
06:27:59
@k900:0upti.meK900Anyone know what is going on here06:28:12
@viraptor:tchncs.deviraptorThe first codesign does just --remove-signature - does it work in isolation? Could be from there06:36:43
@k900:0upti.meK900I genuinely have no clue06:37:17
@k900:0upti.meK900 I think this has happened before, somehow 06:37:49
@k900:0upti.meK900But I still don't understand it06:37:57
@emilazy:matrix.orgemilyprobably sigtool limitations12:36:40
@k900:0upti.meK900I think last time this happened it was transient or something?12:42:17
@emilazy:matrix.orgemilyrace condition with build order?12:45:22
@emilazy:matrix.orgemilyundeclared deps?12:45:28
@k900:0upti.meK900idk12:45:35
@k900:0upti.meK900But it seems consistent now12:45:42

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