Revert "setup.sh: fatal: This word should yield a string, but it contains an array"
Revert "setup.sh: fatal: This word should yield a string, but it contains an array"

This reverts commit bf99a819a16089a8df03cc06262f06b31dfb683c.
It caused regressions in some packages; see:
https://github.com/NixOS/nixpkgs/commit/bf99a819a160

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs