diff --git a/src/nix-store/nix-store.cc b/src/nix-store/nix-store.cc
index 96e265f9e..3bbefedbe 100644
--- a/src/nix-store/nix-store.cc
+++ b/src/nix-store/nix-store.cc
@@ -812,10 +812,13 @@ static void opServe(Strings opFlags, Strings opArgs)
             if (nrRepeats != 0) {
                 throw Error("client requested repeating builds, but this is not currently implemented");
             }
-            // Ignore. It used to be true by default, but also only never had any effect when `nrRepeats == 0`.
-            // We have already asserted that `nrRepeats` in fact is 0, so we can safely ignore this without
-            // doing something other than what the client asked for.
-            auto _enforceDeterminism = readInt(in);
+            // Ignore 'enforceDeterminism'. It used to be true by
+            // default, but also only never had any effect when
+            // `nrRepeats == 0`.  We have already asserted that
+            // `nrRepeats` in fact is 0, so we can safely ignore this
+            // without doing something other than what the client
+            // asked for.
+            readInt(in);
 
             settings.runDiffHook = true;
         }
diff --git a/tests/lang.sh b/tests/lang.sh
index c0b0fc58c..95e795e2e 100644
--- a/tests/lang.sh
+++ b/tests/lang.sh
@@ -2,6 +2,7 @@ source common.sh
 
 export TEST_VAR=foo # for eval-okay-getenv.nix
 export NIX_REMOTE=dummy://
+export NIX_STORE_DIR=/nix/store
 
 nix-instantiate --eval -E 'builtins.trace "Hello" 123' 2>&1 | grep -q Hello
 nix-instantiate --eval -E 'builtins.addErrorContext "Hello" 123' 2>&1
@@ -50,10 +51,10 @@ for i in lang/eval-okay-*.nix; do
         if test -e lang/$i.flags; then
             flags=$(cat lang/$i.flags)
         fi
-        if ! expect 0 env NIX_PATH=lang/dir3:lang/dir4 nix-instantiate $flags --eval --strict lang/$i.nix > lang/$i.out; then
+        if ! expect 0 env NIX_PATH=lang/dir3:lang/dir4 HOME=/fake-home nix-instantiate $flags --eval --strict lang/$i.nix > lang/$i.out; then
             echo "FAIL: $i should evaluate"
             fail=1
-        elif ! diff lang/$i.out lang/$i.exp; then
+        elif ! diff <(< lang/$i.out sed -e "s|$(pwd)|/pwd|g") lang/$i.exp; then
             echo "FAIL: evaluation result of $i not as expected"
             fail=1
         fi
diff --git a/tests/lang/eval-okay-closure.exp b/tests/lang/eval-okay-closure.exp
new file mode 100644
index 000000000..e7dbf9781
--- /dev/null
+++ b/tests/lang/eval-okay-closure.exp
@@ -0,0 +1 @@
+[ { foo = true; key = -13; } { foo = true; key = -12; } { foo = true; key = -11; } { foo = true; key = -9; } { foo = true; key = -8; } { foo = true; key = -7; } { foo = true; key = -5; } { foo = true; key = -4; } { foo = true; key = -3; } { key = -1; } { foo = true; key = 0; } { foo = true; key = 1; } { foo = true; key = 2; } { foo = true; key = 4; } { foo = true; key = 5; } { foo = true; key = 6; } { key = 8; } { foo = true; key = 9; } { foo = true; key = 10; } { foo = true; key = 13; } { foo = true; key = 14; } { foo = true; key = 15; } { key = 17; } { foo = true; key = 18; } { foo = true; key = 19; } { foo = true; key = 22; } { foo = true; key = 23; } { key = 26; } { foo = true; key = 27; } { foo = true; key = 28; } { foo = true; key = 31; } { foo = true; key = 32; } { key = 35; } { foo = true; key = 36; } { foo = true; key = 40; } { foo = true; key = 41; } { key = 44; } { foo = true; key = 45; } { foo = true; key = 49; } { key = 53; } { foo = true; key = 54; } { foo = true; key = 58; } { key = 62; } { foo = true; key = 67; } { key = 71; } { key = 80; } ]
diff --git a/tests/lang/eval-okay-functionargs.exp b/tests/lang/eval-okay-functionargs.exp
new file mode 100644
index 000000000..c1c9f8ffa
--- /dev/null
+++ b/tests/lang/eval-okay-functionargs.exp
@@ -0,0 +1 @@
+[ "stdenv" "fetchurl" "aterm-stdenv" "aterm-stdenv2" "libX11" "libXv" "mplayer-stdenv2.libXv-libX11" "mplayer-stdenv2.libXv-libX11_2" "nix-stdenv-aterm-stdenv" "nix-stdenv2-aterm2-stdenv2" ]
diff --git a/tests/lang/eval-okay-path-antiquotation.exp b/tests/lang/eval-okay-path-antiquotation.exp
new file mode 100644
index 000000000..5b8ea0243
--- /dev/null
+++ b/tests/lang/eval-okay-path-antiquotation.exp
@@ -0,0 +1 @@
+{ absolute = /foo; expr = /pwd/lang/foo/bar; home = /fake-home/foo; notfirst = /pwd/lang/bar/foo; simple = /pwd/lang/foo; slashes = /foo/bar; surrounded = /pwd/lang/a-foo-b; }
diff --git a/tests/lang/eval-okay-path.exp b/tests/lang/eval-okay-path.exp
new file mode 100644
index 000000000..3ce7f8283
--- /dev/null
+++ b/tests/lang/eval-okay-path.exp
@@ -0,0 +1 @@
+"/nix/store/ya937r4ydw0l6kayq8jkyqaips9c75jm-output"