treewide: use lib.systems.equals when comparing elaborated systems

pkgs/applications/audio/csound/default.nix

@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [ "-DBUILD_CSOUND_AC=0" ] # fails to find Score.hpp
     ++ lib.optional stdenv.isDarwin "-DCS_FRAMEWORK_DEST=${placeholder "out"}/lib"
     # Ignore gettext in CMAKE_PREFIX_PATH on cross to prevent find_program picking up the wrong gettext
-    ++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) "-DCMAKE_IGNORE_PATH=${lib.getBin gettext}/bin";
+    ++ lib.optional (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) "-DCMAKE_IGNORE_PATH=${lib.getBin gettext}/bin";
 
   nativeBuildInputs = [ cmake flex bison gettext ];
   buildInputs = [ libsndfile libsamplerate boost ]

pkgs/applications/audio/vcv-rack/default.nix

@@ -204,7 +204,7 @@ stdenv.mkDerivation rec {
     zstd
   ];
 
-  makeFlags = lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+  makeFlags = lib.optionals (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) [
     "CROSS_COMPILE=${stdenv.cc.targetPrefix}"
   ] ++ [
     "all"

pkgs/applications/editors/mg/default.nix

@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-88FrXN7h5uRLY8YMKSzUjBF4n18DEiiiDyoYr+7qXdQ=";
   };
 
-  postPatch = lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
+  postPatch = lib.optionalString (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) ''
     substituteInPlace configure --replace "./conftest" "echo"
   '';
 

pkgs/applications/editors/oed/default.nix

@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
     hash = "sha256-bbV89YhrmL7tOgKly5OfQDRz4QE0UzZrVsmoXiJ7ZZw=";
   };
 
-  postPatch = lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
+  postPatch = lib.optionalString (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) ''
     substituteInPlace configure --replace "./conftest" "echo"
   '';
 

pkgs/applications/editors/poke/default.nix

@@ -15,7 +15,7 @@
 }:
 
 let
-  isCross = stdenv.hostPlatform != stdenv.buildPlatform;
+  isCross = (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform);
 in
 stdenv.mkDerivation (finalAttrs: {
   pname = "poke";

pkgs/applications/editors/vim/default.nix

@@ -26,7 +26,7 @@ stdenv.mkDerivation {
   configureFlags = [
     "--enable-multibyte"
     "--enable-nls"
-  ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) ([
+  ] ++ lib.optionals (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ([
     "vim_cv_toupper_broken=no"
     "--with-tlib=ncurses"
     "vim_cv_terminfo=yes"

pkgs/applications/editors/vim/full.nix

@@ -93,7 +93,7 @@ in stdenv.mkDerivation {
     "--disable-nextaf_check"
     "--disable-carbon_check"
     "--disable-gtktest"
-  ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
+  ] ++ lib.optionals (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) [
     "vim_cv_toupper_broken=no"
     "--with-tlib=ncurses"
     "vim_cv_terminfo=yes"

pkgs/applications/editors/zile/default.nix

@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   ]
   # `help2man' wants to run Zile, which won't work when the
   # newly-produced binary can't be run at build-time.
-  ++ lib.optional (stdenv.hostPlatform == stdenv.buildPlatform) help2man;
+  ++ lib.optional (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) help2man;
 
   # Tests can't be run because most of them rely on the ability to
   # fiddle with the terminal.

pkgs/applications/graphics/sane/backends/default.nix

@@ -83,7 +83,7 @@ stdenv.mkDerivation {
 
   # autoconf check for HAVE_MMAP is never set on cross compilation.
   # The pieusb backend fails compilation if HAVE_MMAP is not set.
-  buildFlags = lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [ "CFLAGS=-DHAVE_MMAP=${if stdenv.hostPlatform.isLinux then "1" else "0"}" ];
+  buildFlags = lib.optionals (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) [ "CFLAGS=-DHAVE_MMAP=${if stdenv.hostPlatform.isLinux then "1" else "0"}" ];
 
   postInstall = let
 

pkgs/applications/misc/comodoro/default.nix

@@ -3,8 +3,8 @@
 , fetchFromGitHub
 , stdenv
 , installShellFiles
-, installShellCompletions ? stdenv.hostPlatform == stdenv.buildPlatform
-, installManPages ? stdenv.hostPlatform == stdenv.buildPlatform
+, installShellCompletions ? (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform)
+, installManPages ? (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform)
 , withTcp ? true
 }:
 

pkgs/applications/misc/mangal/default.nix

@@ -18,7 +18,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  postInstall = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
+  postInstall = lib.optionalString (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     # Mangal creates a config file in the folder ~/.config/mangal and fails if not possible
     export MANGAL_CONFIG_PATH=`mktemp -d`
     installShellCompletion --cmd mangal \

pkgs/applications/misc/visidata/default.nix

@@ -111,7 +111,7 @@ buildPythonApplication rec {
   ];
 
   # check phase uses the output bin, which is not possible when cross-compiling
-  doCheck = stdenv.buildPlatform == stdenv.hostPlatform;
+  doCheck = (lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform);
 
   checkPhase = ''
     runHook preCheck

pkgs/applications/networking/browsers/chromium/common.nix

@@ -415,7 +415,7 @@ let
       host_toolchain = "//build/toolchain/linux/unbundle:default";
       # We only build those specific toolchains when we cross-compile, as native non-cross-compilations would otherwise
       # end up building much more things than they need to (roughtly double the build steps and time/compute):
-    } // lib.optionalAttrs (stdenv.buildPlatform != stdenv.hostPlatform) {
+    } // lib.optionalAttrs (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) {
       host_toolchain = "//build/toolchain/linux/unbundle:host";
       v8_snapshot_toolchain = "//build/toolchain/linux/unbundle:host";
     } // {

pkgs/applications/networking/browsers/elinks/default.nix

@@ -4,7 +4,7 @@
 , # Incompatible licenses, LGPLv3 - GPLv2
   enableGuile        ? false,                                         guile ? null
 , enablePython       ? false,                                         python ? null
-, enablePerl         ? (!stdenv.isDarwin) && (stdenv.hostPlatform == stdenv.buildPlatform), perl ? null
+, enablePerl         ? (!stdenv.isDarwin) && (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform), perl ? null
 # re-add javascript support when upstream supports modern spidermonkey
 }:
 

pkgs/applications/networking/browsers/firefox/common.nix

@@ -104,7 +104,7 @@ in
 , jackSupport ? stdenv.isLinux, libjack2
 , jemallocSupport ? !stdenv.hostPlatform.isMusl, jemalloc
 , ltoSupport ? (stdenv.isLinux && stdenv.is64bit && !stdenv.hostPlatform.isRiscV), overrideCC, buildPackages
-, pgoSupport ? (stdenv.isLinux && stdenv.hostPlatform == stdenv.buildPlatform), xvfb-run
+, pgoSupport ? (stdenv.isLinux && (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform)), xvfb-run
 , pipewireSupport ? waylandSupport && webrtcSupport
 , pulseaudioSupport ? stdenv.isLinux, libpulseaudio
 , sndioSupport ? stdenv.isLinux, sndio

pkgs/applications/networking/browsers/w3m/default.nix

@@ -47,7 +47,7 @@ in stdenv.mkDerivation rec {
     })
   ];
 
-  postPatch = lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+  postPatch = lib.optionalString (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     ln -s ${mktable}/bin/mktable mktable
     # stop make from recompiling mktable
     sed -ie 's!mktable.*:.*!mktable:!' Makefile.in
@@ -68,7 +68,7 @@ in stdenv.mkDerivation rec {
 
   configureFlags =
     [ "--with-ssl=${openssl.dev}" "--with-gc=${boehmgc.dev}" ]
-    ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+    ++ lib.optionals (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) [
       "ac_cv_func_setpgrp_void=yes"
     ]
     ++ lib.optional graphicsSupport "--enable-image=${lib.optionalString x11Support "x11,"}fb"

pkgs/applications/networking/cluster/argo/default.nix

@@ -74,7 +74,7 @@ buildGoModule rec {
 
   postInstall = ''
     for shell in bash zsh; do
-      ${if (stdenv.buildPlatform == stdenv.hostPlatform)
+      ${if (lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform)
         then "$out/bin/argo"
         else "${pkgsBuildBuild.argo}/bin/argo"
       } completion $shell > argo.$shell

pkgs/applications/networking/cluster/fluxcd/default.nix

@@ -53,7 +53,7 @@ in buildGoModule rec {
     $out/bin/flux --version | grep ${version} > /dev/null
   '';
 
-  postInstall = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
+  postInstall = lib.optionalString (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     for shell in bash fish zsh; do
       $out/bin/flux completion $shell > flux.$shell
       installShellCompletion flux.$shell

pkgs/applications/networking/cluster/kaniko/default.nix

@@ -29,7 +29,7 @@ buildGoModule rec {
 
   doCheck = false; # requires docker, container-diff (unpackaged yet)
 
-  postInstall = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
+  postInstall = lib.optionalString (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     for shell in bash fish zsh; do
       $out/bin/executor completion $shell > executor.$shell
       installShellCompletion executor.$shell

pkgs/applications/networking/cluster/kubeshark/default.nix

@@ -29,7 +29,7 @@ buildGoModule rec {
   '';
   doCheck = true;
 
-  postInstall = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
+  postInstall = lib.optionalString (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     installShellCompletion --cmd kubeshark \
       --bash <($out/bin/kubeshark completion bash) \
       --fish <($out/bin/kubeshark completion fish) \

pkgs/applications/networking/cluster/kubevela/default.nix

@@ -40,7 +40,7 @@ buildGoModule rec {
   '';
 
   nativeBuildInputs = [ installShellFiles ];
-  postInstall = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
+  postInstall = lib.optionalString (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     installShellCompletion --cmd vela \
       --bash <($out/bin/vela completion bash) \
       --zsh <($out/bin/vela completion zsh)

pkgs/applications/networking/cluster/velero/default.nix

@@ -31,7 +31,7 @@ buildGoModule rec {
   '';
 
   nativeBuildInputs = [ installShellFiles ];
-  postInstall = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
+  postInstall = lib.optionalString (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     $out/bin/velero completion bash > velero.bash
     $out/bin/velero completion zsh > velero.zsh
     installShellCompletion velero.{bash,zsh}

pkgs/applications/networking/instant-messengers/element/keytar/default.nix

@@ -31,7 +31,7 @@ in stdenv.mkDerivation rec {
 
   doCheck = false;
 
-  postPatch = lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+  postPatch = lib.optionalString (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     pkg-config() { "''${PKG_CONFIG}" "$@"; }
     export -f pkg-config
   '';

pkgs/applications/networking/instant-messengers/pidgin/default.nix

@@ -117,7 +117,7 @@ let
         --prefix GST_PLUGIN_SYSTEM_PATH_1_0 : "$GST_PLUGIN_SYSTEM_PATH_1_0"
     '';
 
-    doInstallCheck = stdenv.hostPlatform == stdenv.buildPlatform;
+    doInstallCheck = (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform);
     # In particular, this detects missing python imports in some of the tools.
     postFixup = let
       # TODO: python is a script, so it doesn't work as interpreter on darwin

pkgs/applications/networking/instant-messengers/utox/default.nix

@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
     "-DENABLE_TESTS=${if doCheck then "ON" else "OFF"}"
   ];
 
-  doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
+  doCheck = (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform);
   nativeCheckInputs = [ check ];
 
   meta = with lib; {

pkgs/applications/networking/offrss/default.nix

@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   '';
 
   buildInputs = [ curl libmrss ]
-    ++ lib.optional (stdenv.hostPlatform == stdenv.buildPlatform) podofo
+    ++ lib.optional (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) podofo
     ++ lib.optional (!stdenv.isLinux) libiconv;
 
   # Workaround build failure on -fno-common toolchains:
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
       --replace '$(CC) $(CFLAGS) $(LDFLAGS)' '$(CXX) $(CFLAGS) $(LDFLAGS)'
   '' + lib.optionalString (!stdenv.isLinux) ''
     sed 's/#EXTRA/EXTRA/' -i Makefile
-  '' + lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+  '' + lib.optionalString (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     sed 's/^PDF/#PDF/' -i Makefile
   '';
 

pkgs/applications/networking/sniffers/wireshark/default.nix

@@ -69,7 +69,7 @@ stdenv.mkDerivation rec {
     ./patches/lookup-dumpcap-in-path.patch
   ];
 
-  depsBuildBuild = lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+  depsBuildBuild = lib.optionals (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) [
     buildPackages.stdenv.cc
   ];
 
@@ -141,7 +141,7 @@ stdenv.mkDerivation rec {
     "-DCMAKE_INSTALL_LIBDIR=lib"
     "-DENABLE_APPLICATION_BUNDLE=${if withQt && stdenv.isDarwin then "ON" else "OFF"}"
     "-DLEMON_C_COMPILER=cc"
-  ] ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+  ] ++ lib.optionals (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) [
     "-DHAVE_C99_VSNPRINTF_EXITCODE__TRYRUN_OUTPUT="
     "-DHAVE_C99_VSNPRINTF_EXITCODE=0"
   ];

pkgs/applications/office/kmymoney/default.nix

@@ -59,7 +59,7 @@ stdenv.mkDerivation rec {
       "kmymoney/plugins/woob/interface/kmymoneywoob.py"
   '';
 
-  doInstallCheck = stdenv.hostPlatform == stdenv.buildPlatform;
+  doInstallCheck = (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform);
   nativeInstallCheckInputs = [ xvfb-run ];
   installCheckPhase =
     lib.optionalString doInstallCheck ''

pkgs/applications/science/misc/openmodelica/omcompiler/default.nix

@@ -17,7 +17,7 @@
 , mkOpenModelicaDerivation
 }:
 let
-  isCross = stdenv.buildPlatform != stdenv.hostPlatform;
+  isCross = (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform);
   nativeOMCompiler = buildPackages.openmodelica.omcompiler;
 in
 mkOpenModelicaDerivation ({

pkgs/applications/terminal-emulators/foot/default.nix

@@ -84,7 +84,7 @@ let
 
   # PGO only makes sense if we are not cross compiling and
   # using a compiler which foot's PGO build supports (clang or gcc)
-  doPgo = allowPgo && (stdenv.hostPlatform == stdenv.buildPlatform)
+  doPgo = allowPgo && (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform)
     && compilerName != "unknown";
 
   terminfoDir = "${placeholder "terminfo"}/share/terminfo";

pkgs/applications/version-management/fossil/default.nix

@@ -35,7 +35,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   enableParallelBuilding = true;
 
-  doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
+  doCheck = (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform);
 
   configureFlags =
     lib.optional (!withInternalSqlite) "--disable-internal-sqlite"

pkgs/applications/version-management/git/default.nix

@@ -5,7 +5,7 @@
 , asciidoc, texinfo, xmlto, docbook2x, docbook_xsl, docbook_xml_dtd_45
 , libxslt, tcl, tk, makeWrapper, libiconv
 , svnSupport ? false, subversionClient, perlLibs, smtpPerlLibs
-, perlSupport ? stdenv.buildPlatform == stdenv.hostPlatform
+, perlSupport ? (lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform)
 , nlsSupport ? true
 , osxkeychainSupport ? stdenv.isDarwin
 , guiSupport ? false
@@ -91,7 +91,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   configureFlags = [
     "ac_cv_prog_CURL_CONFIG=${lib.getDev curl}/bin/curl-config"
-  ] ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+  ] ++ lib.optionals (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) [
     "ac_cv_fread_reads_directories=yes"
     "ac_cv_snprintf_returns_bogus=no"
     "ac_cv_iconv_omits_bom=no"
@@ -106,7 +106,7 @@ stdenv.mkDerivation (finalAttrs: {
   ]
   # Git does not allow setting a shell separately for building and run-time.
   # Therefore lets leave it at the default /bin/sh when cross-compiling
-  ++ lib.optional (stdenv.buildPlatform == stdenv.hostPlatform) "SHELL_PATH=${stdenv.shell}"
+  ++ lib.optional (lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) "SHELL_PATH=${stdenv.shell}"
   ++ (if perlSupport then ["PERL_PATH=${perlPackages.perl}/bin/perl"] else ["NO_PERL=1"])
   ++ (if pythonSupport then ["PYTHON_PATH=${python3}/bin/python"] else ["NO_PYTHON=1"])
   ++ lib.optionals stdenv.isSunOS ["INSTALL=install" "NO_INET_NTOP=" "NO_INET_PTON="]
@@ -122,9 +122,9 @@ stdenv.mkDerivation (finalAttrs: {
   #
   # See https://github.com/Homebrew/homebrew-core/commit/dfa3ccf1e7d3901e371b5140b935839ba9d8b706
   ++ lib.optional stdenv.isDarwin "TKFRAMEWORK=/nonexistent"
-  ++ lib.optional (stdenv.hostPlatform.isFreeBSD && stdenv.hostPlatform != stdenv.buildPlatform) "uname_S=FreeBSD";
+  ++ lib.optional (stdenv.hostPlatform.isFreeBSD && (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform)) "uname_S=FreeBSD";
 
-  disallowedReferences = lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [
+  disallowedReferences = lib.optionals (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform) [
     stdenv.shellPackage
   ];
 

pkgs/applications/version-management/glab/default.nix

@@ -28,7 +28,7 @@ buildGoModule rec {
 
   nativeBuildInputs = [ installShellFiles ];
 
-  postInstall = lib.optionalString (stdenv.hostPlatform == stdenv.buildPlatform) ''
+  postInstall = lib.optionalString (lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
     make manpage
     installManPage share/man/man1/*
     installShellCompletion --cmd glab \

pkgs/applications/version-management/mercurial/default.nix

@@ -133,7 +133,7 @@ let
     requiredSystemFeatures = [ "big-parallel" ];
 
     # Don't run tests if not-Linux or if cross-compiling.
-    meta.broken = !stdenv.hostPlatform.isLinux || stdenv.buildPlatform != stdenv.hostPlatform;
+    meta.broken = !stdenv.hostPlatform.isLinux || (!lib.systems.equals stdenv.buildPlatform stdenv.hostPlatform);
   } ''
     addToSearchPathWithCustomDelimiter : PYTHONPATH "${mercurial}/${python.sitePackages}"
 

pkgs/applications/version-management/rcs/default.nix

@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   DIFF3 = "${diffutils}/bin/diff3";
 
   disallowedReferences =
-    lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform)
+    lib.optionals (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform)
       [ buildPackages.diffutils buildPackages.ed ];
 
   env.NIX_CFLAGS_COMPILE = "-std=c99";

pkgs/applications/video/kodi/unwrapped.nix

@@ -205,7 +205,7 @@ in stdenv.mkDerivation (finalAttrs: {
 
     preConfigure = ''
       cmakeFlagsArray+=("-DCORE_PLATFORM_NAME=${lib.concatStringsSep " " kodi_platforms}")
-    '' + lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+    '' + lib.optionalString (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform) ''
       # Need these tools on the build system when cross compiling,
       # hacky, but have found no other way.
       CXX=$CXX_FOR_BUILD LD=ld make -C tools/depends/native/JsonSchemaBuilder

pkgs/applications/video/mplayer/default.nix

@@ -64,7 +64,7 @@ let
     meta.license = lib.licenses.unfree;
   } else null;
 
-  crossBuild = stdenv.hostPlatform != stdenv.buildPlatform;
+  crossBuild = (!lib.systems.equals stdenv.hostPlatform stdenv.buildPlatform);
 
 in