update manpage version from version.py

manpage/generate.sh

@@ -1,9 +1,26 @@
 #!/usr/bin/env bash
+# author: deadc0de6 (https://github.com/deadc0de6)
+# Copyright (c) 2023, deadc0de6
 
-version=$(git describe --tags --abbrev=0)
+# get current working directory
+rl="readlink -f"
+if ! ${rl} "${0}" >/dev/null 2>&1; then
+  rl="realpath"
+  if ! hash ${rl}; then
+    echo "\"${rl}\" not found!" && exit 1
+  fi
+fi
+cur=$(dirname "$(${rl} "${0}")")
 
-hash txt2man 2>/dev/null
-[ "$?" != "0" ] && echo "install txt2man" && exit 1
+# extract version from git latest tag
+#version=$(git describe --tags --abbrev=0)
+# extract version from version.py
+version=$(grep version "${cur}"/../dotdrop/version.py | sed 's/^.*= .\(.*\).$/\1/g')
+
+if ! hash txt2man 2>/dev/null; then
+  echo "install txt2man"
+  exit 1
+fi
 
 txt2man \
   -t "dotdrop" \
@@ -11,4 +28,4 @@ txt2man \
   -r "dotdrop-${version}" \
   -s 1 \
   -v "Save your dotfiles once, deploy them everywhere" \
-  dotdrop.txt2man > dotdrop.1
+  "${cur}/dotdrop.txt2man" > "${cur}/dotdrop.1"