Build failure: tic-80 (CMake 4 error)

[Rhys-T]

Nixpkgs version

• Unstable (25.11)

Steps to reproduce

nix build 'nixpkgs#tic-80'

or

nix-build '<nixpkgs>' -A tic-80

Can Hydra reproduce this build failure?

Yes, Hydra can reproduce this build failure.

Link to Hydra build job

https://hydra.nixos.org/build/309187927

Relevant log output

[…]
-- Checking for module 'zlib'
--   Found zlib, version 1.3.1
-- Use system library: zlib
CMake Warning at cmake/zip.cmake:17 (message):
  System library kubazip not found
Call Stack (most recent call first):
  CMakeLists.txt:154 (include)


CMake Error at vendor/zip/CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.5 has been removed from CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.

  Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.


-- Configuring incomplete, errors occurred!

Additional context

See #445447, as well as the upstream issue nesbox/TIC-80#2823.

TIC-80's own CMakeLists.txt is fine. The problem is from the zip library it uses (submoduled as vendor/zip). That library's upstream actually bumped its CMake version several years ago, but the submodule is still on an even earlier commit.

System metadata

• system: "x86_64-darwin"
• host os: Darwin 24.5.0, macOS 15.5
• multi-user?: yes
• sandbox: no
• version: nix-env (Nix) 2.31.2
• channels(root): "nixpkgs"
• nixpkgs: /nix/store/n4vf8ia28wa77g29cjmg5jn3516qp5qx-nixpkgs/nixpkgs

Notify maintainers

tic-80: @blinry

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[Rhys-T]

Adding

substituteInPlace vendor/zip/CMakeLists.txt --replace-fail \
    'cmake_minimum_required(VERSION 3.4)' \
    'cmake_minimum_required(VERSION 3.10)'

to postPatch seems to be enough to get it to build again. Alternately, updating the entire zip library to v0.3.5 also works:

postUnpack = ''
    pushd "$sourceRoot"/vendor
    rm -r zip
    unpackFile ${self.fetchFromGitHub {
        name = "zip";
        owner = "kuba--";
        repo = "zip";
        tag = "v0.3.5";
        hash = "sha256-wNkIYuwwXo7v3vNaOnRZt1tcd0RGjDvCUqDGdvJzVdo=";
    }}
    popd
'';

I've reported the latter on the upstream issue.

[Rhys-T]

Possible upstream fix: nesbox/TIC-80#2845