meson: Make target-agnostic

The cross file is added in the `mkDerivation`. It isn't nice putting
build tool-specific stuff here, but our current architecture gives us
little alternative.

pkgs/development/tools/build-managers/meson/default.nix

@@ -3,20 +3,8 @@
 , stdenv
 , writeTextDir
 , substituteAll
-, targetPackages
 }:
 
-let
-  # See https://mesonbuild.com/Reference-tables.html#cpu-families
-  cpuFamilies = {
-    aarch64  = "aarch64";
-    armv5tel = "arm";
-    armv6l   = "arm";
-    armv7l   = "arm";
-    i686     = "x86";
-    x86_64   = "x86_64";
-  };
-in
 python3Packages.buildPythonApplication rec {
   pname = "meson";
   version = "0.54.0";
@@ -70,27 +58,11 @@ python3Packages.buildPythonApplication rec {
 
   setupHook = ./setup-hook.sh;
 
-  crossFile = writeTextDir "cross-file.conf" ''
-    [binaries]
-    pkgconfig = 'pkg-config'
-
-    [properties]
-    needs_exe_wrapper = true
-
-    [host_machine]
-    system = '${targetPackages.stdenv.targetPlatform.parsed.kernel.name}'
-    cpu_family = '${cpuFamilies.${targetPackages.stdenv.targetPlatform.parsed.cpu.name}}'
-    cpu = '${targetPackages.stdenv.targetPlatform.parsed.cpu.name}'
-    endian = ${if targetPackages.stdenv.targetPlatform.isLittleEndian then "'little'" else "'big'"}
-  '';
-
   # 0.45 update enabled tests but they are failing
   doCheck = false;
   # checkInputs = [ ninja pkgconfig ];
   # checkPhase = "python ./run_project_tests.py";
 
-  isCross = stdenv.targetPlatform != stdenv.hostPlatform;
-
   meta = with lib; {
     homepage = "https://mesonbuild.com";
     description = "SCons-like build system that use python as a front-end language and Ninja as a building backend";

pkgs/development/tools/build-managers/meson/setup-hook.sh

@@ -5,11 +5,6 @@ mesonConfigurePhase() {
         mesonFlags="--prefix=$prefix $mesonFlags"
     fi
 
-    # Build release by default.
-    if [ -n "@isCross@" ]; then
-      crossMesonFlags="--cross-file=@crossFile@/cross-file.conf"
-    fi
-
     # See multiple-outputs.sh and meson’s coredata.py
     mesonFlags="\
         --libdir=${!outputLib}/lib --libexecdir=${!outputLib}/libexec \