Updated minimal Python version and install guide.

Author: emcconville

docs/guide/install.rst

@@ -38,7 +38,7 @@ easily installed using APT:
 
 .. sourcecode:: console
 
-   $ sudo apt-get install libmagickwand-dev
+   $ sudo apt install imagemagick
 
 
 .. _install-imagemagick-redhat:
@@ -52,7 +52,7 @@ it can be installed using Yum:
 .. sourcecode:: console
 
    $ yum update
-   $ yum install ImageMagick-devel
+   $ yum install ImageMagick-libs
 
 
 .. _install-imagemagick-mac:
@@ -67,13 +67,20 @@ Homebrew
 
       $ brew install imagemagick
 
-   .. If :ref:`seam carving <seam-carving>` (:meth:`Image.liquid_rescale()
-      <wand.image.BaseImage.liquid_rescale>`) is needed you have install
-      liblqr_ as well:
+   If :ref:`seam carving <seam-carving>` (:meth:`Image.liquid_rescale()
+   <wand.image.BaseImage.liquid_rescale>`) is needed you have install
+   liblqr_ as well:
 
-      .. sourcecode:: console
+   .. sourcecode:: console
+
+      $ brew install imagemagick --with-liblqr
+
+   If you need to render PDF files, or use FreeType font features, you
+   will need to install Ghostscript:
+
+   .. sourcecode:: console
 
-         $ brew install imagemagick --with-liblqr
+      $ brew install ghostscript
 
    If you are running on a Mac with Apple Silicon, you will need to export
    :envvar:`MAGICK_HOME` before using Wand. 

docs/index.rst

@@ -61,16 +61,16 @@ are lacking something we need:
 Requirements
 ------------
 
-- Python 3.3 or higher
+- Python 3.8 or higher
 
-  - CPython 3.3 or higher
-  - PyPy 1.5 or higher
+  - CPython 3.8 or higher
+  - PyPy 3.10 or higher
 
 - MagickWand library
 
-  - ``libmagickwand-dev`` for APT on Debian/Ubuntu
+  - ``imagemagick-7.q16`` for APT on Debian/Ubuntu
   - ``imagemagick`` for MacPorts/Homebrew on Mac
-  - ``ImageMagick-devel`` for Yum on CentOS
+  - ``ImageMagick-libs`` for Yum on CentOS
 
 
 User's guide