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, 25 insertions, 25 deletions

diff --git a/tests/fetchGit.sh b/tests/fetchGit.sh
index 885dd9e77..25333e477 100644
--- a/tests/fetchGit.sh
+++ b/tests/fetchGit.sh
@@ -28,39 +28,39 @@ git -C $repo commit -m 'Bla2' -a
 rev2=$(git -C $repo rev-parse HEAD)
 
 # Fetch the default branch.
-path=$(nix eval --impure --raw "(builtins.fetchGit file://$repo).outPath")
+path=$(nix eval --impure --raw --expr "(builtins.fetchGit file://$repo).outPath")
 [[ $(cat $path/hello) = world ]]
 
 # In pure eval mode, fetchGit without a revision should fail.
-[[ $(nix eval --impure --raw "(builtins.readFile (fetchGit file://$repo + \"/hello\"))") = world ]]
-(! nix eval --raw "(builtins.readFile (fetchGit file://$repo + \"/hello\"))")
+[[ $(nix eval --impure --raw --expr "builtins.readFile (fetchGit file://$repo + \"/hello\")") = world ]]
+(! nix eval --raw --expr "builtins.readFile (fetchGit file://$repo + \"/hello\")")
 
 # Fetch using an explicit revision hash.
-path2=$(nix eval --raw "(builtins.fetchGit { url = file://$repo; rev = \"$rev2\"; }).outPath")
+path2=$(nix eval --raw --expr "(builtins.fetchGit { url = file://$repo; rev = \"$rev2\"; }).outPath")
 [[ $path = $path2 ]]
 
 # In pure eval mode, fetchGit with a revision should succeed.
-[[ $(nix eval --raw "(builtins.readFile (fetchGit { url = file://$repo; rev = \"$rev2\"; } + \"/hello\"))") = world ]]
+[[ $(nix eval --raw --expr "builtins.readFile (fetchGit { url = file://$repo; rev = \"$rev2\"; } + \"/hello\")") = world ]]
 
 # Fetch again. This should be cached.
 mv $repo ${repo}-tmp
-path2=$(nix eval --impure --raw "(builtins.fetchGit file://$repo).outPath")
+path2=$(nix eval --impure --raw --expr "(builtins.fetchGit file://$repo).outPath")
 [[ $path = $path2 ]]
 
-[[ $(nix eval --impure "(builtins.fetchGit file://$repo).revCount") = 2 ]]
-[[ $(nix eval --impure --raw "(builtins.fetchGit file://$repo).rev") = $rev2 ]]
+[[ $(nix eval --impure --expr "(builtins.fetchGit file://$repo).revCount") = 2 ]]
+[[ $(nix eval --impure --raw --expr "(builtins.fetchGit file://$repo).rev") = $rev2 ]]
 
 # Fetching with a explicit hash should succeed.
-path2=$(nix eval --tarball-ttl 0 --raw "(builtins.fetchGit { url = file://$repo; rev = \"$rev2\"; }).outPath")
+path2=$(nix eval --tarball-ttl 0 --raw --expr "(builtins.fetchGit { url = file://$repo; rev = \"$rev2\"; }).outPath")
 [[ $path = $path2 ]]
 
-path2=$(nix eval --tarball-ttl 0 --raw "(builtins.fetchGit { url = file://$repo; rev = \"$rev1\"; }).outPath")
+path2=$(nix eval --tarball-ttl 0 --raw --expr "(builtins.fetchGit { url = file://$repo; rev = \"$rev1\"; }).outPath")
 [[ $(cat $path2/hello) = utrecht ]]
 
 mv ${repo}-tmp $repo
 
 # Using a clean working tree should produce the same result.
-path2=$(nix eval --impure --raw "(builtins.fetchGit $repo).outPath")
+path2=$(nix eval --impure --raw --expr "(builtins.fetchGit $repo).outPath")
 [[ $path = $path2 ]]
 
 # Using an unclean tree should yield the tracked but uncommitted changes.
@@ -71,26 +71,26 @@ echo bar > $repo/dir2/bar
 git -C $repo add dir1/foo
 git -C $repo rm hello
 
-path2=$(nix eval --impure --raw "(builtins.fetchGit $repo).outPath")
+path2=$(nix eval --impure --raw --expr "(builtins.fetchGit $repo).outPath")
 [ ! -e $path2/hello ]
 [ ! -e $path2/bar ]
 [ ! -e $path2/dir2/bar ]
 [ ! -e $path2/.git ]
 [[ $(cat $path2/dir1/foo) = foo ]]
 
-[[ $(nix eval --impure --raw "(builtins.fetchGit $repo).rev") = 0000000000000000000000000000000000000000 ]]
+[[ $(nix eval --impure --raw --expr "(builtins.fetchGit $repo).rev") = 0000000000000000000000000000000000000000 ]]
 
 # ... unless we're using an explicit ref or rev.
-path3=$(nix eval --impure --raw "(builtins.fetchGit { url = $repo; ref = \"master\"; }).outPath")
+path3=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = $repo; ref = \"master\"; }).outPath")
 [[ $path = $path3 ]]
 
-path3=$(nix eval --raw "(builtins.fetchGit { url = $repo; rev = \"$rev2\"; }).outPath")
+path3=$(nix eval --raw --expr "(builtins.fetchGit { url = $repo; rev = \"$rev2\"; }).outPath")
 [[ $path = $path3 ]]
 
 # Committing should not affect the store path.
 git -C $repo commit -m 'Bla3' -a
 
-path4=$(nix eval --impure --tarball-ttl 0 --raw "(builtins.fetchGit file://$repo).outPath")
+path4=$(nix eval --impure --tarball-ttl 0 --raw --expr "(builtins.fetchGit file://$repo).outPath")
 [[ $path2 = $path4 ]]
 
 # tarball-ttl should be ignored if we specify a rev
@@ -98,32 +98,32 @@ echo delft > $repo/hello
 git -C $repo add hello
 git -C $repo commit -m 'Bla4'
 rev3=$(git -C $repo rev-parse HEAD)
-nix eval --tarball-ttl 3600 "(builtins.fetchGit { url = $repo; rev = \"$rev3\"; })" >/dev/null
+nix eval --tarball-ttl 3600 --expr "builtins.fetchGit { url = $repo; rev = \"$rev3\"; }" >/dev/null
 
 # Update 'path' to reflect latest master
-path=$(nix eval --impure --raw "(builtins.fetchGit file://$repo).outPath")
+path=$(nix eval --impure --raw --expr "(builtins.fetchGit file://$repo).outPath")
 
 # Check behavior when non-master branch is used
 git -C $repo checkout $rev2 -b dev
 echo dev > $repo/hello
 
 # File URI uses 'master' unless specified otherwise
-path2=$(nix eval --impure --raw "(builtins.fetchGit file://$repo).outPath")
+path2=$(nix eval --impure --raw --expr "(builtins.fetchGit file://$repo).outPath")
 [[ $path = $path2 ]]
 
 # Using local path with branch other than 'master' should work when clean or dirty
-path3=$(nix eval --impure --raw "(builtins.fetchGit $repo).outPath")
+path3=$(nix eval --impure --raw --expr "(builtins.fetchGit $repo).outPath")
 # (check dirty-tree handling was used)
-[[ $(nix eval --impure --raw "(builtins.fetchGit $repo).rev") = 0000000000000000000000000000000000000000 ]]
+[[ $(nix eval --impure --raw --expr "(builtins.fetchGit $repo).rev") = 0000000000000000000000000000000000000000 ]]
 
 # Committing shouldn't change store path, or switch to using 'master'
 git -C $repo commit -m 'Bla5' -a
-path4=$(nix eval --impure --raw "(builtins.fetchGit $repo).outPath")
+path4=$(nix eval --impure --raw --expr "(builtins.fetchGit $repo).outPath")
 [[ $(cat $path4/hello) = dev ]]
 [[ $path3 = $path4 ]]
 
 # Confirm same as 'dev' branch
-path5=$(nix eval --impure --raw "(builtins.fetchGit { url = $repo; ref = \"dev\"; }).outPath")
+path5=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = $repo; ref = \"dev\"; }).outPath")
 [[ $path3 = $path5 ]]
 
 
@@ -133,8 +133,8 @@ rm -rf $TEST_HOME/.cache/nix/gitv2
 # Try again, but without 'git' on PATH
 NIX=$(command -v nix)
 # This should fail
-(! PATH= $NIX eval --impure --raw "(builtins.fetchGit { url = $repo; ref = \"dev\"; }).outPath" )
+(! PATH= $NIX eval --impure --raw --expr "(builtins.fetchGit { url = $repo; ref = \"dev\"; }).outPath" )
 
 # Try again, with 'git' available.  This should work.
-path5=$(nix eval --impure --raw "(builtins.fetchGit { url = $repo; ref = \"dev\"; }).outPath")
+path5=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = $repo; ref = \"dev\"; }).outPath")
 [[ $path3 = $path5 ]]