source common.sh clearStore nix eval --expr 'assert 1 + 2 == 3; true' [[ $(nix eval --impure --expr 'builtins.readFile ./pure-eval.sh') =~ clearStore ]] (! nix eval --expr 'builtins.readFile ./pure-eval.sh') (! nix eval --expr builtins.currentTime) (! nix eval --expr builtins.currentSystem) (! nix-instantiate --pure-eval ./simple.nix) [[ $(nix eval --impure --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x") == 123 ]] (! nix eval --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x") nix eval --expr "(import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; sha256 = \"$(nix hash-file pure-eval.nix --type sha256)\"; })).x"