cleanup info duplicating Home#suggested-build-enviornment

Common-build-problems.md

@@ -1,83 +1,54 @@
 # Prerequisites
 
-Make sure to follow this guidance for your platform before any troubleshooting.
+Make sure to have installed Python's binary dependencies and build tools as per https://github.com/pyenv/pyenv/wiki#suggested-build-environment before any troubleshooting.
+
+Below are some alternatives to those
 
 * Ubuntu/Debian: 
 
-```sh
-sudo apt-get install -y build-essential libssl-dev zlib1g-dev libbz2-dev \
-libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
-xz-utils tk-dev libffi-dev liblzma-dev python-openssl git
-```
-Alternative of libreadline-dev:
+    * Alternative of libreadline-dev:
+
         ```sh
         sudo apt install libedit-dev
         ```
 
-* Fedora/CentOS/RHEL(aws ec2):
+    * An [inferior alternative](https://github.com/docker-library/python/issues/235) for `libncursesw` if it's not available:
 
         ```sh
-sudo yum install @development zlib-devel bzip2 bzip2-devel readline-devel sqlite \
-sqlite-devel openssl-devel xz xz-devel libffi-devel findutils
+        sudo apt install libncurses5-dev
         ```
-Alternative of openssl-devel:
+
+
+* Fedora/CentOS/RHEL(aws ec2):
+
+    * Alternative of openssl-devel:
+    
         ```sh
         sudo yum install compat-openssl10-devel --allowerasing
         ```
 
 * openSUSE
 
-```sh
-zypper in zlib-devel bzip2 libbz2-devel libffi-devel libopenssl-devel \
-readline-devel sqlite3 sqlite3-devel xz xz-devel 
-```
-
     For building Python versions from source with OpenSUSE you need the packages in pattern `devel_basis`
 
     ```sh
     zypper in -t pattern devel_basis
     ```
 
-* Alpine
-
-```sh
-apk add --no-cache bzip2-dev coreutils dpkg-dev dpkg expat-dev \
-findutils gcc gdbm-dev libc-dev libffi-dev libnsl-dev libtirpc-dev \
-linux-headers make ncurses-dev openssl-dev pax-utils readline-dev \
-sqlite-dev tcl-dev tk tk-dev util-linux-dev xz-dev zlib-dev
-```
-
-For installing Pyenv with [Pyenv-Installer](https://github.com/pyenv/pyenv-installer), you would need git, curl and bash
-```sh
-apk add git curl bash
-```
-
 * Arch and derivatives
 
-```sh
-pacman -S --needed base-devel openssl zlib bzip2 readline sqlite curl \
-llvm ncurses xz tk libffi python-pyopenssl git
-```
     The library ncurses5 would require an [AUR Helper](https://wiki.archlinux.org/index.php/AUR_helpers) to install. If using [YAY](https://aur.archlinux.org/packages/yay/):
 
     ```sh
     yay -S ncurses5-compat-libs 
     ```
 
-* macOS:
-
-```sh
-brew install readline xz
-```
-
-**NOTE**: `libssl-dev` is required when compiling Python, installing `libssl-dev` will actually install `zlib1g-dev`, which leads to uninstall and re-install Python versions (installed before installing `libssl-dev`). On Redhat and derivatives the package is named `openssl-devel`.
-
-## Removing a python version
+## Removing a python version manually
 
 ```sh
 rm -rf ~/.pyenv/versions/X.Y.Z
 ```
-Replace X.Y.Z with the version that you want to remove. To list installed versions:
+Where "X.Y.Z" is the version that you want to remove. To list installed versions:
 
 ```sh
 pyenv versions