source common.sh clearStore nix eval --expr 'assert 1 + 2 == 3; true' [[ $(nix eval --impure --expr 'builtins.readFile ./pure-eval.sh') =~ clearStore ]] missingImpureErrorMsg=$(! nix eval --expr 'builtins.readFile ./pure-eval.sh' 2>&1) echo "$missingImpureErrorMsg" | grep -q -- --impure || \ fail "The error message should mention the “--impure” flag to unblock users" [[ $(nix eval --expr 'builtins.pathExists ./pure-eval.sh') == false ]] || \ fail "Calling 'pathExists' on a non-authorised path should return false" (! 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" rm -rf $TEST_ROOT/eval-out nix eval --store dummy:// --write-to $TEST_ROOT/eval-out --expr '{ x = "foo" + "bar"; y = { z = "bla"; }; }' [[ $(cat $TEST_ROOT/eval-out/x) = foobar ]] [[ $(cat $TEST_ROOT/eval-out/y/z) = bla ]] rm -rf $TEST_ROOT/eval-out (! nix eval --store dummy:// --write-to $TEST_ROOT/eval-out --expr '{ "." = "bla"; }') (! nix eval --expr '~/foo')