fix(lib/env/env.sh): look up sources if bpkg path can be resolved

lib/env/env.sh

@@ -37,7 +37,7 @@ export BPKG_PACKAGE_USER
 export BPKG_PACKAGE_NAME="$(bpkg_package name 2>/dev/null)"
 export BPKG_PACKAGE_REPO="$(bpkg_package repo 2>/dev/null)"
 export BPKG_PACKAGE_PATH="$(bpkg_package_path)"
-export BPKG_PACKAGE_ROOT="$(dirname "$BPKG_PACKAGE_PATH")"
+export BPKG_PACKAGE_ROOT="$(realpath "$(dirname "$BPKG_PACKAGE_PATH")")"
 export BPKG_PACKAGE_DEPS="$BPKG_PACKAGE_ROOT/deps"
 export BPKG_PACKAGE_VERSION="$(bpkg_package version 2>/dev/null)"
 export BPKG_PACKAGE_DESCRIPTION="$(bpkg_package description 2>/dev/null)"
@@ -49,11 +49,11 @@ export BPKG_REMOTE
 export BPKG_REMOTES
 export BPKG_REMOTE_RAW_PATH
 
-if test -f bpkg.json || test -f package.json; then
+if test -f "$BPKG_PACKAGE_PATH"; then
   declare -a BPKG_SCRIPT_SOURCES=()
-  BPKG_SCRIPT_SOURCES+=($(find . -name '*.sh'))
-  BPKG_SCRIPT_SOURCES+=($(find . -name '*.zsh'))
-  BPKG_SCRIPT_SOURCES+=($(find . -name '*.bash'))
+  BPKG_SCRIPT_SOURCES+=($(find "$BPKG_SCRIPT_ROOT" -name '*.sh' 2>/dev/null))
+  BPKG_SCRIPT_SOURCES+=($(find "$BPKG_SCRIPT_ROOT" -name '*.zsh' 2>/dev/null))
+  BPKG_SCRIPT_SOURCES+=($(find "$BPKG_SCRIPT_ROOT" -name '*.bash' 2>/dev/null))
   export BPKG_SCRIPT_SOURCES
 fi