[clever@amd-nixos:/nas]$ strace -f ./result/bin/gui 2>&1 | grep -i --color style
[pid  4035] stat("/run/current-system/sw/lib/qt5/plugins/styles/.", 0x7fff7b368de0) = -1 ENOENT (No such file or directory)
[pid  4035] stat("/nix/var/nix/profiles/default/lib/qt5/plugins/styles/.", 0x7fff7b368de0) = -1 ENOENT (No such file or directory)
[pid  4035] stat("/home/clever/.nix-profile/lib/qt5/plugins/styles/.", 0x7fff7b368de0) = -1 ENOENT (No such file or directory)
[pid  4035] stat("/nix/store/cx9jp3ycmkknbssh0sk5llvgizfx944d-mystuff/lib/qt4/plugins/styles/.", 0x7fff7b368de0) = -1 ENOENT (No such file or directory)
[pid  4035] stat("/nix/store/zarcvnzhzxhsvamj28ra5d12g5ilf6bb-kdelibs-4.14.16/lib/kde4/plugins/styles/.", 0x7fff7b368de0) = -1 ENOENT (No such file or directory)
[pid  4035] stat("/nix/store/fb7hs640x1j3d40z94jmp8lr701m1mxq-qtbase-5.6.1-1/lib/qt5/plugins/styles/.", 0x7fff7b368de0) = -1 ENOENT (No such file or directory)
[pid  4035] stat("/nix/store/hncdw358gba2i623jwaqc5v7mgz8gf6r-nixos-gui-install/bin/styles/.", 0x7fff7b368de0) = -1 ENOENT (No such file or directory)
[pid  4035] write(2, "QGtkStyle could not resolve GTK."..., 84QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries.
[pid  4035] write(2, "QCommonStyle::drawComplexControl"..., 56QCommonStyle::drawComplexControl: Control 1 not handled
[pid  4035] write(2, "QCommonStyle::drawComplexControl"..., 56QCommonStyle::drawComplexControl: Control 1 not handled
[pid  4035] write(2, "QCommonStyle::drawComplexControl"..., 56QCommonStyle::drawComplexControl: Control 1 not handled
[pid  4035] write(2, "QCommonStyle::drawComplexControl"..., 56QCommonStyle::drawComplexControl: Control 1 not handled

[clever@amd-nixos:/nas]$ strace -f ./result/bin/gui -style literaly-anything 2>&1 | grep -i --color style
execve("./result/bin/gui", ["./result/bin/gui", "-style", "literaly-anything"], [/* 74 vars */]) = 0
execve("/nix/store/hncdw358gba2i623jwaqc5v7mgz8gf6r-nixos-gui-install/bin/.gui-wrapped", ["./result/bin/gui", "-style", "literaly-anything"], [/* 74 vars */]) = 0
[pid  4068] stat("/run/current-system/sw/lib/qt5/plugins/styles/.", 0x7ffcc960a590) = -1 ENOENT (No such file or directory)
[pid  4068] stat("/nix/var/nix/profiles/default/lib/qt5/plugins/styles/.", 0x7ffcc960a590) = -1 ENOENT (No such file or directory)
[pid  4068] stat("/home/clever/.nix-profile/lib/qt5/plugins/styles/.", 0x7ffcc960a590) = -1 ENOENT (No such file or directory)
[pid  4068] stat("/nix/store/cx9jp3ycmkknbssh0sk5llvgizfx944d-mystuff/lib/qt4/plugins/styles/.", 0x7ffcc960a590) = -1 ENOENT (No such file or directory)
[pid  4068] stat("/nix/store/zarcvnzhzxhsvamj28ra5d12g5ilf6bb-kdelibs-4.14.16/lib/kde4/plugins/styles/.", 0x7ffcc960a590) = -1 ENOENT (No such file or directory)
[pid  4068] stat("/nix/store/fb7hs640x1j3d40z94jmp8lr701m1mxq-qtbase-5.6.1-1/lib/qt5/plugins/styles/.", 0x7ffcc960a590) = -1 ENOENT (No such file or directory)
[pid  4068] stat("/nix/store/hncdw358gba2i623jwaqc5v7mgz8gf6r-nixos-gui-install/bin/styles/.", 0x7ffcc960a590) = -1 ENOENT (No such file or directory)

[clever@amd-nixos:/nas]$