diff --git a/tools/ci/lib b/tools/ci/activate
similarity index 100%
rename from tools/ci/lib
rename to tools/ci/activate
diff --git a/tools/ci/fixture b/tools/ci/fixture
new file mode 100755
index 000000000..977b6f433
--- /dev/null
+++ b/tools/ci/fixture
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -eu
+
+source $(dirname "$0")/activate
+source $(dirname "$0")/os
+
+
+function fixture {
+    os_setup
+
+    tobiko-fixture "$@"
+}
+
+
+if [ $(basename "$0") == fixture ]; then
+    fixture "$@"
+fi
diff --git a/tools/ci/os b/tools/ci/os
index b9c7e76ee..b977b79aa 100755
--- a/tools/ci/os
+++ b/tools/ci/os
@@ -2,7 +2,8 @@
 
 set -eu
 
-source $(dirname "$0")/lib
+source $(dirname "$0")/activate
+
 
 OS_VIRTUAL_ENV=$(realpath "${OS_VIRTUAL_ENV:-.tox/scenario}")
 
diff --git a/tools/ci/tox b/tools/ci/tox
index c7141d01f..91b5e1acc 100755
--- a/tools/ci/tox
+++ b/tools/ci/tox
@@ -2,7 +2,7 @@
 
 set -eu
 
-source $(dirname "$0")/lib
+source $(dirname "$0")/activate
 
 
 # Prefer python 3 over python 2