download.rst: add instructions to install via pixi (fixes OSGeo#11551) (OSGeo#11802)

Author: gregorywaynepower

doc/source/download.rst

@@ -77,7 +77,7 @@ Windows
 ................................................................................
 
 Windows builds are available via `Conda Forge`_ (64-bit only). See the
-:ref:`conda` section for more detailed information. GDAL is also distributed
+:ref:`conda` or :ref:`pixi` section for more detailed information. GDAL is also distributed
 by `GISInternals`_ and `OSGeo4W`_ and through the `NuGet`_ and :ref:`vcpkg` package managers.
 
 .. _`Conda Forge`: https://anaconda.org/conda-forge/gdal
@@ -211,6 +211,31 @@ Then install GDAL from the ``gdal-master`` channel:
     mamba install -c gdal-master gdal
     mamba install -c gdal-master libgdal-arrow-parquet # if you need the Arrow and Parquet drivers
 
+.. _pixi:
+
+pixi
+^^^^
+
+`Pixi <https://pixi.sh/latest/>`__  is a package management tool for developers. It allows the developer
+to install libraries and applications in a reproducible way. Packages for GDAL are
+available through the `conda-forge <https://anaconda.org/conda-forge/gdal>`__ channel.
+
+If you want to be able to use GDAL as part of a project:
+
+::
+
+    pixi init name-of-project
+    cd name-of-project
+    pixi add gdal libgdal-core
+    pixi add libgdal-arrow-parquet # if you need the Arrow and Parquet drivers
+    pixi shell
+
+Pixi supports using tools like GDAL and OGR globally, similar to conda's base environment, without having to use an activate command:
+
+::
+
+    pixi global install gdal libgdal-core
+    pixi global install libgdal-arrow-parquet # if you need the Arrow and Parquet drivers
 
 .. _vcpkg:
 

doc/source/spelling_wordlist.txt

@@ -2413,6 +2413,8 @@ Pirmin
 pixelfunction
 pixelfunctions
 pixelsize
+pixi
+Pixi
 Pixmap
 pkgconfig
 pkid