uw - a uv wrapper to run a uv "workspace" with independent uv.lock from its dependencies

uw

#!/usr/bin/env bash
set -euo pipefail

# Walk up from CWD looking for .uw
find_uw_root() {
    local dir="$PWD"
    while [[ "$dir" != "/" ]]; do
        if [[ -f "$dir/.uw" ]]; then
            echo "$dir"
            return 0
        fi
        dir="$(dirname "$dir")"
    done
    echo "uw: no .uw file found in any parent directory" >&2
    return 1
}

UW_ROOT="$(find_uw_root)"

# Parse the workspace path from .uw (handles `workspace = "packages/workspace"`)
WORKSPACE_REL="$(grep '^workspace' "$UW_ROOT/.uw" | sed 's/.*=\s*"\(.*\)"/\1/')"
WORKSPACE_DIR="$UW_ROOT/$WORKSPACE_REL"

if [[ ! -d "$WORKSPACE_DIR" ]]; then
    echo "uw: workspace directory not found: $WORKSPACE_DIR" >&2
    exit 1
fi

# Run uv with the workspace package as the project root
exec uv --project "$WORKSPACE_DIR" "$@"