vcv-rack: 2.6.0 -> 2.6.4

[liberodark]

Changelog : https://github.com/VCVRack/Rack/blob/v2/CHANGELOG.md
Diff : VCVRack/Rack@v2.6.0...v2.6.4
Fix : #407443

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• Nixpkgs 25.11 Release Notes (or backporting 24.11 and 25.05 Nixpkgs Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
• NixOS 25.11 Release Notes (or backporting 24.11 and 25.05 NixOS Release notes)
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

---

Add a 👍 reaction to pull requests you find important.

[GaetanLepage]

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 411452

---

x86_64-linux

✅ 1 package built:

• vcv-rack

---

aarch64-linux

❌ 1 package failed to build:

• vcv-rack

[liberodark]

nixpkgs-review result

Generated using nixpkgs-review-gha

Command: nixpkgs-review pr 411452

Logs: https://github.com/liberodark/nixpkgs-review-gha/actions/runs/15863368113

---

x86_64-linux (sandbox = true)

✅ 1 package built:

• vcv-rack

---

aarch64-linux (sandbox = true)

❌ 1 package failed to build:

• vcv-rack

---

Error logs: `aarch64-linux`

vcv-rack

                 from src/core/Notes.cpp:1:
include/dsp/convert.hpp:17:1: warning: 'gcc_struct' attribute directive ignored [8;;https://gcc.gnu.org/onlinedocs/gcc-14.3.0/gcc/Warning-Options.html#index-Wattributes�-Wattributes8;;�]
   17 | Int24 {
      | ^~~~~
g++ -std=c++11 -Wsuggest-override  -Iinclude -Idep/include -fPIC -fno-gnu-unique -MMD -MP -g -O3 -funsafe-math-optimizations -fno-omit-frame-pointer -Wall -Wextra -Wno-unused-parameter -march=armv8-a+fp+simd  -c -o build/src/core/plugin.cpp.o src/core/plugin.cpp
In file included from include/rack.hpp:122,
                 from src/core/plugin.hpp:1,
                 from src/core/plugin.cpp:1:
include/dsp/convert.hpp:17:1: warning: 'gcc_struct' attribute directive ignored [8;;https://gcc.gnu.org/onlinedocs/gcc-14.3.0/gcc/Warning-Options.html#index-Wattributes�-Wattributes8;;�]
   17 | Int24 {
      | ^~~~~
g++ -std=c++11 -Wsuggest-override  -Iinclude -Idep/include -fPIC -fno-gnu-unique -MMD -MP -g -O3 -funsafe-math-optimizations -fno-omit-frame-pointer -Wall -Wextra -Wno-unused-parameter -march=armv8-a+fp+simd  -c -o build/src/dsp/minblep.cpp.o src/dsp/minblep.cpp
g++ -std=c++11 -Wsuggest-override  -Iinclude -Idep/include -fPIC -fno-gnu-unique -MMD -MP -g -O3 -funsafe-math-optimizations -fno-omit-frame-pointer -Wall -Wextra -Wno-unused-parameter -march=armv8-a+fp+simd  -c -o build/src/engine/Cable.cpp.o src/engine/Cable.cpp
g++ -std=c++11 -Wsuggest-override  -Iinclude -Idep/include -fPIC -fno-gnu-unique -MMD -MP -g -O3 -funsafe-math-optimizations -fno-omit-frame-pointer -Wall -Wextra -Wno-unused-parameter -march=armv8-a+fp+simd  -c -o build/src/engine/Engine.cpp.o src/engine/Engine.cpp
src/engine/Engine.cpp: In function 'void rack::engine::cpuPause()':
src/engine/Engine.cpp:28:9: error: '__yield' was not declared in this scope; did you mean '__ynl'?
   28 |         __yield();
      |         ^~~~~~~
      |         __ynl
make: *** [compile.mk:79: build/src/engine/Engine.cpp.o] Error 1

[liberodark]

nixpkgs-review result

Generated using nixpkgs-review-gha

Command: nixpkgs-review pr 411452

Logs: https://github.com/liberodark/nixpkgs-review-gha/actions/runs/16414620150

---

x86_64-linux

✅ 1 package built:

• vcv-rack

---

aarch64-linux

❌ 1 package failed to build:

• vcv-rack

---

Error logs: `aarch64-linux`

vcv-rack

                 from src/core/Notes.cpp:1:
include/dsp/convert.hpp:17:1: warning: 'gcc_struct' attribute directive ignored [8;;https://gcc.gnu.org/onlinedocs/gcc-14.3.0/gcc/Warning-Options.html#index-Wattributes�-Wattributes8;;�]
   17 | Int24 {
      | ^~~~~
g++ -std=c++11 -Wsuggest-override  -Iinclude -Idep/include -fPIC -fno-gnu-unique -MMD -MP -g -O3 -funsafe-math-optimizations -fno-omit-frame-pointer -Wall -Wextra -Wno-unused-parameter -march=armv8-a+fp+simd  -c -o build/src/core/plugin.cpp.o src/core/plugin.cpp
In file included from include/rack.hpp:122,
                 from src/core/plugin.hpp:1,
                 from src/core/plugin.cpp:1:
include/dsp/convert.hpp:17:1: warning: 'gcc_struct' attribute directive ignored [8;;https://gcc.gnu.org/onlinedocs/gcc-14.3.0/gcc/Warning-Options.html#index-Wattributes�-Wattributes8;;�]
   17 | Int24 {
      | ^~~~~
g++ -std=c++11 -Wsuggest-override  -Iinclude -Idep/include -fPIC -fno-gnu-unique -MMD -MP -g -O3 -funsafe-math-optimizations -fno-omit-frame-pointer -Wall -Wextra -Wno-unused-parameter -march=armv8-a+fp+simd  -c -o build/src/dsp/minblep.cpp.o src/dsp/minblep.cpp
g++ -std=c++11 -Wsuggest-override  -Iinclude -Idep/include -fPIC -fno-gnu-unique -MMD -MP -g -O3 -funsafe-math-optimizations -fno-omit-frame-pointer -Wall -Wextra -Wno-unused-parameter -march=armv8-a+fp+simd  -c -o build/src/engine/Cable.cpp.o src/engine/Cable.cpp
g++ -std=c++11 -Wsuggest-override  -Iinclude -Idep/include -fPIC -fno-gnu-unique -MMD -MP -g -O3 -funsafe-math-optimizations -fno-omit-frame-pointer -Wall -Wextra -Wno-unused-parameter -march=armv8-a+fp+simd  -c -o build/src/engine/Engine.cpp.o src/engine/Engine.cpp
src/engine/Engine.cpp: In function 'void rack::engine::cpuPause()':
src/engine/Engine.cpp:28:9: error: '__yield' was not declared in this scope; did you mean '__ynl'?
   28 |         __yield();
      |         ^~~~~~~
      |         __ynl
make: *** [compile.mk:79: build/src/engine/Engine.cpp.o] Error 1

[afh]

Could I interest you in helping out over on #332358, @liberodark?

[liberodark]

Superseed by : #332358