diff --git a/meson.build b/meson.build
index e94f002..8addd09 100644
--- a/meson.build
+++ b/meson.build
@@ -31,6 +31,19 @@ fs = import('fs')
 guile = find_program (['guile2.2', 'guile'])
 sh = find_program ('sh')
 bash = find_program ('bash')
+lv2lint = find_program ('lv2lint', required: false)
+lv2_validate = find_program (
+  'lv2_validate', required: false)
+sord_validate = find_program (
+  'sord_validate', required: false)
+carla_single = find_program (
+  'carla-single', required: false)
+carla_single_wrap = find_program (
+  'scripts/carla_single_wrap.sh')
+lv2lint_wrap = find_program (
+  'scripts/lv2lint_wrap.sh')
+lv2_validate_wrap = find_program (
+  'scripts/lv2_validate_wrap.sh')
 
 # dependencies
 ztoolkit_dep = dependency(
@@ -59,7 +72,7 @@ elif host_machine.system() == 'windows'
 endif
 
 prefix = get_option('prefix')
-lv2dir = join_paths(prefix, get_option('lv2dir'))
+lv2dir = prefix / get_option('lv2dir')
 
 # cflags
 common_cflags = cc.get_supported_arguments([
diff --git a/plugins/meson.build b/plugins/meson.build
index c9ef375..09590f9 100644
--- a/plugins/meson.build
+++ b/plugins/meson.build
@@ -255,31 +255,33 @@ if get_option ('plugins').contains (pl[0])
 
   # test
   pl_build_dir = meson.current_build_dir ()
-  lv2lint = find_program ('lv2lint', required: false)
-  lv2_validate = find_program (
-    'lv2_validate', required: false)
-  sord_validate = find_program (
-    'sord_validate', required: false)
+  test_env = environment ({
+    'PL_BUILD_DIR': pl_build_dir,
+    'PL_NAME': pl_str,
+    'PL_URI': pl_uri,
+    'LIBEXT': libext,
+    'LV2_DIR': lv2dir,
+    })
   if lv2lint.found() and (os_linux or os_freebsd)
-    lv2lint_wrap = find_program (
-      join_paths ('..', 'scripts', 'lv2lint_wrap.sh'))
     test (
       'LV2 lint', lv2lint_wrap,
-      args: [
-        lv2lint.path(), pl_build_dir, pl_str,
-        pl_uri, libext,
-        ],
+      args: [ lv2lint.path () ],
+      env: test_env,
       suite: pl[0])
   endif
   if lv2_validate.found() and sord_validate.found()
-    lv2_validate_wrap = find_program (
-      join_paths ('..', 'scripts', 'lv2_validate_wrap.sh'))
     test (
       'LV2 validate', lv2_validate_wrap,
-      args: [
-        lv2_validate.path(), pl_build_dir, pl_str,
-        pl_uri, libext,
-        ],
+      args: [ lv2_validate.path() ],
+      env: test_env,
+      suite: pl[0])
+  endif
+  if carla_single.found () and not pl_str.contains ('LFO')
+    test (
+      'Carla single', carla_single_wrap,
+      args: [ carla_single.path () ],
+      env: test_env,
+      timeout: 60,
       suite: pl[0])
   endif
 endif
diff --git a/scripts/carla_single_wrap.sh b/scripts/carla_single_wrap.sh
new file mode 100755
index 0000000..2f7dd1f
--- /dev/null
+++ b/scripts/carla_single_wrap.sh
@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+# $1: carla-single
+
+set -o xtrace
+set -e
+
+carla_single_bin=$1
+
+tmpdir=$(mktemp -d /tmp/carla_single_wrap.XXXXXXXXX)
+tmp_plugin_dir="$tmpdir/$PL_NAME"
+mkdir -p "$tmp_plugin_dir"
+cp $PL_BUILD_DIR/$PL_NAME.ttl \
+  $PL_BUILD_DIR/${PL_NAME}_dsp$LIBEXT $tmp_plugin_dir/
+if [ -e $PL_BUILD_DIR/${PL_NAME}_ui$LIBEXT ] ; then
+  cp $PL_BUILD_DIR/${PL_NAME}_ui$LIBEXT $tmp_plugin_dir/
+fi
+cp $PL_BUILD_DIR/${PL_NAME}_manifest.ttl $tmp_plugin_dir/manifest.ttl
+for lv2dir in atom.lv2 buf-size.lv2 core.lv2 data-access.lv2 \
+  dynmanifest.lv2 event.lv2 instance-access.lv2 log.lv2 midi.lv2 \
+  morph.lv2 options.lv2 parameters.lv2 patch.lv2 port-groups.lv2 \
+  port-props.lv2 presets.lv2 resize-port.lv2 schemas.lv2 \
+  state.lv2 time.lv2 ui.lv2 units.lv2 urid.lv2 uri-map.lv2 \
+  worker.lv2; do
+  cp -r $LV2_DIR/$lv2dir $tmpdir/
+done
+
+LV2_PATH="$tmpdir" \
+  CARLA_BRIDGE_DUMMY=1 \
+  CARLA_BRIDGE_TESTING=native \
+  env $carla_single_bin $PL_URI
+
+rm -rf $tmpdir
diff --git a/scripts/lv2_validate_wrap.sh b/scripts/lv2_validate_wrap.sh
index 1a82c93..013e47d 100755
--- a/scripts/lv2_validate_wrap.sh
+++ b/scripts/lv2_validate_wrap.sh
@@ -1,17 +1,10 @@
 #!/usr/bin/env bash
 # $1: lv2_validate
-# $2: plugin build dir
-# $3: plugin name
-# $4: plugin URI
 
 set -o xtrace
 set -e
 
-LV2_VALIDATE_BIN=$1
-PL_BUILD_DIR=$2
-PL_NAME=$3
-PL_URI=$4
-LIBEXT=$5
+lv2_validate_bin=$1
 
 tmpdir=$(mktemp -d /tmp/lv2_validate_wrap.XXXXXXXXX)
 tmp_plugin_dir="$tmpdir/$PL_NAME"
@@ -21,6 +14,17 @@ cp $PL_BUILD_DIR/$PL_NAME.ttl \
 if [ -e $PL_BUILD_DIR/${PL_NAME}_ui$LIBEXT ] ; then
   cp $PL_BUILD_DIR/${PL_NAME}_ui$LIBEXT $tmp_plugin_dir/
 fi
-cp $PL_BUILD_DIR/$3_manifest.ttl $tmp_plugin_dir/manifest.ttl
+cp $PL_BUILD_DIR/${PL_NAME}_manifest.ttl $tmp_plugin_dir/manifest.ttl
+for lv2dir in atom.lv2 buf-size.lv2 core.lv2 data-access.lv2 \
+  dynmanifest.lv2 event.lv2 instance-access.lv2 log.lv2 midi.lv2 \
+  morph.lv2 options.lv2 parameters.lv2 patch.lv2 port-groups.lv2 \
+  port-props.lv2 presets.lv2 resize-port.lv2 schemas.lv2 \
+  state.lv2 time.lv2 ui.lv2 units.lv2 urid.lv2 uri-map.lv2 \
+  worker.lv2; do
+  cp -r $LV2_DIR/$lv2dir $tmpdir/
+done
 
-LV2_PATH="$tmpdir" env $LV2_VALIDATE_BIN $PL_URI
+LV2_PATH="$tmpdir" \
+  env $lv2_validate_bin $PL_URI
+
+rm -rf $tmpdir
diff --git a/scripts/lv2lint_wrap.sh b/scripts/lv2lint_wrap.sh
index a2a4134..f1bcff7 100755
--- a/scripts/lv2lint_wrap.sh
+++ b/scripts/lv2lint_wrap.sh
@@ -1,17 +1,10 @@
 #!/usr/bin/env bash
 # $1: lv2lint
-# $2: plugin build dir
-# $3: plugin name
-# $4: plugin URI
 
 set -o xtrace
 set -e
 
-LV2_LINT_BIN=$1
-PL_BUILD_DIR=$2
-PL_NAME=$3
-PL_URI=$4
-LIBEXT=$5
+lv2_lint_bin=$1
 
 tmpdir=$(mktemp -d /tmp/lv2lint_wrap.XXXXXXXXX)
 tmp_plugin_dir="$tmpdir/$PL_NAME"
@@ -21,7 +14,18 @@ cp $PL_BUILD_DIR/$PL_NAME.ttl \
 if [ -e $PL_BUILD_DIR/${PL_NAME}_ui$LIBEXT ] ; then
   cp $PL_BUILD_DIR/${PL_NAME}_ui$LIBEXT $tmp_plugin_dir/
 fi
-cp $PL_BUILD_DIR/$3_manifest.ttl $tmp_plugin_dir/manifest.ttl
+cp $PL_BUILD_DIR/${PL_NAME}_manifest.ttl $tmp_plugin_dir/manifest.ttl
+for lv2dir in atom.lv2 buf-size.lv2 core.lv2 data-access.lv2 \
+  dynmanifest.lv2 event.lv2 instance-access.lv2 log.lv2 midi.lv2 \
+  morph.lv2 options.lv2 parameters.lv2 patch.lv2 port-groups.lv2 \
+  port-props.lv2 presets.lv2 resize-port.lv2 schemas.lv2 \
+  state.lv2 time.lv2 ui.lv2 units.lv2 urid.lv2 uri-map.lv2 \
+  worker.lv2; do
+  cp -r $LV2_DIR/$lv2dir $tmpdir/
+done
 
-LV2_PATH="$tmpdir" env $LV2_LINT_BIN -d \
+LV2_PATH="$tmpdir" \
+  env $lv2_lint_bin -d \
   -I $tmp_plugin_dir/ $PL_URI
+
+rm -rf $tmpdir