diff --git a/readme.md b/readme.md
index 96ea799..08f857f 100644
--- a/readme.md
+++ b/readme.md
@@ -211,18 +211,14 @@ Handle project workflows in a unified way:
 
 ## When
 
-### First
-
-* try git repo url variable first for shunit
-
 ### Shell
 
+* comment
 * fit banner to text
 * review repositories handling for systems
   * opensuse
     * codecs repository
     * disable & enable https
-* write function to clone git repositories
 * write unit tests
 
 ### Shell → Python
@@ -258,9 +254,12 @@ Handle project workflows in a unified way:
 * set workflow templates
   * actions
   * includes
+* try git repo url variable first for shunit
 * write unit tests
 
 ### Later
 
 * automate versions fetching
+* document behavior differences
+* generate graphs
 * turn readme into documentation
diff --git a/spcd.sh b/spcd/main.sh
similarity index 95%
rename from spcd.sh
rename to spcd/main.sh
index f7aec42..59ceab2 100644
--- a/spcd.sh
+++ b/spcd/main.sh
@@ -514,10 +514,12 @@ ${SPCD_PYTHON_VENV}/lib/${SPCD_PYTHON_COMMAND}/site-packages"
     spcd_split
     spcd_echo "SPCD_PYTHON_PACKAGES" "SPCD_PYTHON_VENV_PACKAGES"
     # variables
+    # certificate authorities
     [ -n "${SPCD_CA_1}" ] && SPCD_CA=true
-    #
+    # downloads
+    SPCD_DL="$(mktemp --directory)"
     spcd_split
-    spcd_echo "SPCD_CA"
+    spcd_echo "SPCD_CA" "SPCD_DL"
 }
 
 spcd_list_working_directory() {
@@ -711,44 +713,27 @@ index-url = ${SPCD_URL_PYTHON}
 
 spcd_install_python_modules() {
     spcd_step "Install Python modules"
-    spcd_ipm__root="$(mktemp --directory)" || exit
     spcd_ipm__target="${SPCD_PYTHON_VENV_PACKAGES}"
-    echo "→ ${spcd_ipm__root}"
-    for spcd_ipm__repository in "${SPCD_GIT_MAIN}" "${SPCD_GIT_ROOT}"; do
-        spcd_ipm__url="$(spcd_get_git_url "${spcd_ipm__repository}")"
-        spcd_ipm__name="$(basename "${spcd_ipm__url}")"
-        spcd_split
-        echo "\
-${spcd_ipm__url}
-↓"
-        git clone \
-            "${spcd_ipm__url}" \
-            "${spcd_ipm__root}/${spcd_ipm__name}" ||
-            exit
-        spcd_ipm__path="${spcd_ipm__root}/${spcd_ipm__name}/${spcd_ipm__name}"
-        echo "\
-${spcd_ipm__path}
-↓
-${spcd_ipm__target}"
-        cp --recursive "${spcd_ipm__path}" "${spcd_ipm__target}" ||
-            exit
-        # check matching of file and variable
-        spcd_ipm__script="${spcd_ipm__root}/${spcd_ipm__name}/spcd.sh"
-        if [ -f "${spcd_ipm__script}" ]; then
-            spcd_split
-            spcd_ipm__check="${spcd_ipm__root}/check.${SPCD_CMD_SUM}"
-            "${SPCD_CMD_SUM}" "${spcd_ipm__script}" >"${spcd_ipm__check}"
-            printf "%s" "${SPCD}" >"${spcd_ipm__script}"
-            ls -l "${spcd_ipm__script}"
-            dos2unix "${spcd_ipm__script}"
-            ls -l "${spcd_ipm__script}"
-            "${SPCD_CMD_SUM}" -c "${spcd_ipm__check}" || spcd_error_ci "SPCD"
-        fi
-    done
-    spcd_split
     spcd_ls "${spcd_ipm__target}"
     spcd_split
-    spcd_rm "${spcd_ipm__root}"
+    spcd_ipm__path="$(spcd_pip_install "${SPCD_GIT_MAIN}")"
+    # check matching of file and variable
+    spcd_ipm__script="${spcd_ipm__path}/main.sh"
+    if [ -f "${spcd_ipm__script}" ]; then
+        spcd_split
+        ls -l "${spcd_ipm__script}"
+        spcd_ipm__check="${spcd_ipm__script}.${SPCD_CMD_SUM}"
+        "${SPCD_CMD_SUM}" "${spcd_ipm__script}" >"${spcd_ipm__check}"
+        printf "%s" "${SPCD}" >"${spcd_ipm__script}"
+        ls -l "${spcd_ipm__script}"
+        dos2unix "${spcd_ipm__script}"
+        ls -l "${spcd_ipm__script}"
+        "${SPCD_CMD_SUM}" -c "${spcd_ipm__check}" || spcd_error_ci "SPCD"
+    fi
+    spcd_split
+    spcd_pip_install "${SPCD_GIT_ROOT}"
+    spcd_split
+    spcd_ls "${spcd_ipm__target}"
 }
 
 spcd_install_packages() {
@@ -882,7 +867,22 @@ spcd_error_os() {
     exit "${SPCD_ERROR_OS}"
 }
 
-spcd_get_git_url() {
+spcd_git_clone() {
+    if [ -n "${1}" ]; then
+        spcd_gc__name="$(basename "${1}")"
+        spcd_gc__path="${SPCD_DL}/${spcd_gc__name}"
+        spcd_gc__url="$(spcd_git_url "${1}")"
+        echo "\
+${spcd_gc__url}
+↓"
+        git clone \
+            "${spcd_gc__url}" \
+            "${spcd_gc__path}"
+        echo "${spcd_gc__path}"
+    fi
+}
+
+spcd_git_url() {
     if [ -n "${1}" ]; then
         case "${1}" in
         http*) echo "${1}" ;;
@@ -948,6 +948,21 @@ spcd_openssl() {
     fi
 }
 
+spcd_pip_install() {
+    if [ -n "${1}" ]; then
+        spcd_pi__name="$(basename "${1}")"
+        spcd_pi__path="$(spcd_git_clone "${1}")"
+        spcd_pi__path="${spcd_pi__path}/${spcd_pi__name}"
+        spcd_pi__target="${SPCD_PYTHON_VENV_PACKAGES}"
+        echo "\
+${spcd_pi__path}
+↓
+${spcd_pi__target}"
+        cp --recursive "${spcd_pi__path}" "${spcd_pi__target}"
+        echo "${spcd_pi__target}/${spcd_pi__name}"
+    fi
+}
+
 spcd_rm() {
     spcd_rm__path="${1}"
     if [ -e "${spcd_rm__path}" ]; then