Add documentation around package dependencies (#41437)

Documented procedure to handle package dependencies required by
packages which are Ansible dependencies.

Fixes: #30732
Fixes: #16571

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

docs/docsite/rst/installation_guide/intro_installation.rst

@@ -159,7 +159,7 @@ Debian/Ubuntu packages can also be built from the source checkout, run:
 
     $ make deb
 
-You may also wish to run from source to get the latest, which is covered above.
+You may also wish to run from source to get the latest, which is covered below.
 
 Latest Releases Via Apt (Debian)
 ++++++++++++++++++++++++++++++++
@@ -395,6 +395,8 @@ bugs and feature ideas.
        Examples of basic commands
    :ref:`working_with_playbooks`
        Learning ansible's configuration management language
+   :ref:`installation_faqs`
+       Ansible Installation related to FAQs
    `Mailing List <http://groups.google.com/group/ansible-project>`_
        Questions? Help? Ideas?  Stop by the list on Google Groups
    `irc.freenode.net <http://irc.freenode.net>`_

docs/docsite/rst/reference_appendices/faq.rst

@@ -131,6 +131,19 @@ requires Python 2, you can also report a bug on our `bug tracker
 
 Do not replace the shebang lines of your python modules.  Ansible will do this for you automatically at deploy time.
 
+.. _installation_faqs:
+
+How do I handle the package dependencies required by Ansible package dependencies during Ansible installation ?
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+While installing Ansible, sometimes you may encounter errors such as `No package 'libffi' found` or `fatal error: Python.h: No such file or directory`
+These errors are generally caused by the missing packages which are dependencies of the packages required by Ansible.
+For example, `libffi` package is dependency of `pynacl` and `paramiko` (Ansible -> paramiko -> pynacl -> libffi).
+
+In order to solve these kinds of dependency issue, you may need to install required packages using the OS native package managers (e.g., `yum`, `dnf` or `apt`) or as mentioned in the package installation guide.
+
+Please refer the documentation of the respective package for such dependencies and their installation methods.
+
 Common Platform Issues
 ++++++++++++++++++++++