diff --git a/check-nur.sh b/check-nur.sh
new file mode 100755
index 0000000..1a231aa
--- /dev/null
+++ b/check-nur.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+# -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source /etc/nulib.sh || exit 1
+
+include_wip=
+args=(
+    "vérifier que src/ n'utilise pas de classes de nur\\"
+    #"usage"
+    -w,--include-wip .
+)
+parse_args "$@"; set -- "${args[@]}"
+
+if [ -n "$include_wip" ]; then
+    function filter() { cat; }
+else
+    function filter() { grep -v '^src/wip/'; }
+fi
+
+grep -rP '^use nur\\(?!sery)' src | filter
diff --git a/sync-nur.sh b/sync-nur.sh
index 77ed02d..e0314db 100755
--- a/sync-nur.sh
+++ b/sync-nur.sh
@@ -16,9 +16,14 @@ parse_args "$@"; set -- "${args[@]}"
 
 cd "$MYDIR"
 
+# tout ce qui est entre if false; ...; fi a déjà été migré
+
+if false; then
 FROM=../nur-tests
 sy src/ nur_src/t/
+fi
 
+if false; then
 FROM=../nur-base
 sy src_api/ nur_src/
 for i in b cli config data io m php ref tools v; do
@@ -28,33 +33,50 @@ sy public/ nur_public/
 ##sy sbin/ nur_sbin/ --exclude /composer.phar
 sy tests/ nur_tests/
 #sy tbin/ nur_tbin/
+fi
 
+if false; then
 FROM=../nur-v-bs3
 sy src/ nur_src/v/bs3/
 sy public/ nur_public/
+fi
 
+if false; then
 FROM=../nur-m-pdo
 sy src/ nur_src/m/pdo/
+fi
 
+if false; then
 FROM=../nur-m-oracle
 sy src/ nur_src/m/oracle/
+fi
 
+if false; then
 FROM=../nur-m-pgsql
 sy src/ nur_src/m/pgsql/
+fi
 
+if false; then
 FROM=../nur-mapper
 sy src/ nur_src/mapper/
 sy tests/ nur_tests/mapper/
 #sy tbin/ nur_tbin/
+fi
 
+if false; then
 FROM=../nur-passwd
 sy src/ nur_src/passwd/
 sy tests/ nur_tests/passwd/
 #sy tbin/ nur_tbin/
+fi
 
+if false; then
 FROM=../nur-ldap
 sy src/ nur_src/ldap/
 sy tests/ nur_tests/ldap/
 #sy tbin/ nur_tbin/
+fi
 
+if false; then
 ./nur_sbin/update_classes.php
+fi