more fixes

scripts/install

@@ -1,7 +1,4 @@
 #!/bin/sh -e
 
-echo "==> Installing Python…"
-uv python install
-
 echo "==> Installing Python dependencies…"
 uv sync --all-extras

scripts/test

@@ -1,17 +1,12 @@
 #!/bin/sh
 
-export PREFIX=""
-if [ -d 'venv' ] ; then
-    export PREFIX="venv/bin/"
-fi
-
 set -ex
 
 if [ -z $GITHUB_ACTIONS ]; then
     scripts/check
 fi
 
-${PREFIX}coverage run -m pytest "$@"
+uv run coverage run -m pytest "$@"
 
 if [ -z $GITHUB_ACTIONS ]; then
     scripts/coverage