extract build stage

.drone.yml

@@ -9,6 +9,20 @@ steps:
   - pacman -Sy --noconfirm git >/dev/null
   - git submodule update --init --recursive
 
+- name: build
+  image: archlinux
+  environment:
+    PYTHON_ENV: python python-pipenv python-setuptools
+  when:
+    branch:
+    - drone
+
+  commands:
+    - pacman -Sy --noconfirm make $PYTHON_ENV > /dev/null
+
+    # build site
+    - make all
+
 - name: deploy
   image: archlinux
   environment:
@@ -25,8 +39,7 @@ steps:
   commands:
     # install deps
     - pacman -Sy --noconfirm > /dev/null
-    - pacman -S --noconfirm python python-pip > /dev/null
-    - pacman -S --noconfirm make git openssh rsync > /dev/null
+    - pacman -S --noconfirm openssh rsync > /dev/null
 
     #  configure ssh
     - eval $(ssh-agent -s)
@@ -36,8 +49,5 @@ steps:
     - ssh-add
     - echo "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config
 
-    # build site
-    - make all
-
     # run operations on remote host