nix: Add --expr flag

This replaces the '(...)' installable syntax, which is not very
discoverable. The downside is that you can't have multiple expressions
or mix expressions and other installables.

1 files changed, 8 insertions, 8 deletions

diff --git a/tests/pure-eval.sh b/tests/pure-eval.sh
index 6e2c6962d..43a765997 100644
--- a/tests/pure-eval.sh
+++ b/tests/pure-eval.sh
@@ -2,17 +2,17 @@ source common.sh
 
 clearStore
 
-nix eval '(assert 1 + 2 == 3; true)'
+nix eval --expr 'assert 1 + 2 == 3; true'
 
-[[ $(nix eval --impure '(builtins.readFile ./pure-eval.sh)') =~ clearStore ]]
+[[ $(nix eval --impure --expr 'builtins.readFile ./pure-eval.sh') =~ clearStore ]]
 
-(! nix eval '(builtins.readFile ./pure-eval.sh)')
+(! nix eval --expr 'builtins.readFile ./pure-eval.sh')
 
-(! nix eval '(builtins.currentTime)')
-(! nix eval '(builtins.currentSystem)')
+(! nix eval --expr builtins.currentTime)
+(! nix eval --expr builtins.currentSystem)
 
 (! nix-instantiate --pure-eval ./simple.nix)
 
-[[ $(nix eval --impure "((import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x)") == 123 ]]
-(! nix eval "((import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; })).x)")
-nix eval "((import (builtins.fetchurl { url = file://$(pwd)/pure-eval.nix; sha256 = \"$(nix hash-file pure-eval.nix --type sha256)\"; })).x)"
+[[ $(nix eval --impure --expr "(import (builtins.fetchurl { url = file://$(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"