Shorten the path to the test root

Fix a socket length failure on the OSX builders

mk/tests.mk

@@ -8,7 +8,7 @@ define run-install-test
 
   .PHONY: $1.test
   $1.test: $1 $(test-deps)
-	@env TEST_NAME=$1 TESTS_ENVIRONMENT="$(tests-environment)" mk/run_test.sh $1
+	@env TEST_NAME=$(notdir $(basename $1)) TESTS_ENVIRONMENT="$(tests-environment)" mk/run_test.sh $1
 
 endef
 

src/libstore/globals.cc

@@ -35,7 +35,7 @@ Settings::Settings()
     , nixLibexecDir(canonPath(getEnv("NIX_LIBEXEC_DIR").value_or(NIX_LIBEXEC_DIR)))
     , nixBinDir(canonPath(getEnv("NIX_BIN_DIR").value_or(NIX_BIN_DIR)))
     , nixManDir(canonPath(NIX_MAN_DIR))
-    , nixDaemonSocketFile(canonPath(nixStateDir + DEFAULT_SOCKET_PATH))
+    , nixDaemonSocketFile(canonPath(getEnv("NIX_DAEMON_SOCKET_PATH").value_or(nixStateDir + DEFAULT_SOCKET_PATH)))
 {
     buildUsersGroup = getuid() == 0 ? "nixbld" : "";
     lockCPU = getEnv("NIX_AFFINITY_HACK") == "1";

tests/common.sh.in

@@ -11,6 +11,7 @@ export NIX_LOCALSTATE_DIR=$TEST_ROOT/var
 export NIX_LOG_DIR=$TEST_ROOT/var/log/nix
 export NIX_STATE_DIR=$TEST_ROOT/var/nix
 export NIX_CONF_DIR=$TEST_ROOT/etc
+export NIX_DAEMON_SOCKET_PATH=$TEST_ROOT/daemon-socket
 unset NIX_USER_CONF_FILES
 export _NIX_TEST_SHARED=$TEST_ROOT/shared
 if [[ -n $NIX_STORE ]]; then
@@ -76,7 +77,7 @@ startDaemon() {
     rm -f $NIX_STATE_DIR/daemon-socket/socket
     nix-daemon &
     for ((i = 0; i < 30; i++)); do
-        if [ -e $NIX_STATE_DIR/daemon-socket/socket ]; then break; fi
+        if [ -e $NIX_DAEMON_SOCKET_PATH ]; then break; fi
         sleep 1
     done
     pidDaemon=$!