auto bump compile-pythons

cf https://discuss.afpy.org/t/venv-direnv-prompt-bash-et-emacs-et-lsp/1845/4

compile-python.sh

@@ -1,5 +1,31 @@
 #!/bin/bash
 
+
+
+
+_get_last_tag()
+{
+    [[ $1 =~ ^[23.]\.[0-9]+\.[0-9]+$ ]] && echo $1 || \
+        curl -s https://www.python.org/ftp/python/ \
+        | grep -o ">[0-9.]\+/<" \
+        | sed "s/^>//;s|/<$||" \
+        | grep ^$1 \
+        | sort --version-sort \
+        | tail -n 1
+}
+
+_get_last_instable()
+{
+    [[ $1 =~ ^[23.]\.[0-9]+\.0$ ]] && \
+        curl -s https://www.python.org/ftp/python/$1/ \
+        | grep -o "Python-[0-9]\.[0-9]\+\.0[a-z0-9]\+" \
+        | sort \
+        | uniq \
+        | sed "s/Python-[0-9.]*//;" \
+        | sort --version-sort \
+        | tail -n 1
+}
+
 compile-python()
 {
     # Inspired from the great https://gitlab.com/python-devs/ci-images/
@@ -8,16 +34,18 @@ compile-python()
     # Needs:
     # sudo apt-get update; sudo apt-get install make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev
 
-    local PY_VERSION="$1"
-    local BETA="$2"
+    local PY_VERSION=`_get_last_tag $1`
+    local BETA=${2:-`_get_last_instable $PY_VERSION`}
     local URL="https://www.python.org/ftp/python"
     (
         cd /tmp || return 1
+        [ -f $HOME/.local/bin/python${PY_VERSION}${BETA} ] || return 2
         wget -qO- "$URL/$PY_VERSION/Python-$PY_VERSION$BETA.tgz" | tar -xzf - || (
             echo "Version not found, check on $URL."
         )
         [ -d "Python-$PY_VERSION$BETA" ] && (cd "Python-$PY_VERSION$BETA"; ./configure --prefix="$HOME/.local/" && make -j "$(nproc)" && make altinstall) &&
-            rm -r "Python-$PY_VERSION$BETA"
+            rm -r "Python-$PY_VERSION$BETA" &&
+            cp $HOME/.local/bin/python${PY_VERSION%.*} $HOME/.local/bin/python${PY_VERSION}${BETA}
     )
 }