tiny improvements

doc/RTD/source/GettingStarted/compiling_code.rst

@@ -105,6 +105,16 @@ GRACKLE
 GRACKLE cooling is implemented in SWIFT. If you wish to take advantage of it, you 
 will need it installed. It can be found `here <https://github.com/grackle-project/grackle>`_.
 
+.. warning::
+    (State 2023) Grackle is experiencing current development, and the API is subject
+    to changes in the future. For convenience, a frozen version is hosted as a fork
+    on github here: https://github.com/mladenivkovic/grackle-swift .
+    The version available there will be tried and tested and ensured to work with
+    SWIFT.
+
+    Additionally, that repository hosts files necessary to install that specific 
+    version of grackle with spack.
+
 
 HEALPix C library
 ~~~~~~~~~~~~~~~~~~~

doc/RTD/source/SubgridModels/Basic/index.rst

@@ -6,7 +6,7 @@ Basic model (others)
 ====================
 
 Sinks: Simple Bondi-Hoyle accretion
-~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
 
 The ``Basic`` sink model provides a foundation on which new sink implementations could be built. It includes a prescription for Bondi-Hoyle gas accretion, and a method for sink-sink mergers that is a slightly simplified version of the implementation used in GEAR.
 

doc/RTD/source/SubgridModels/GEAR/index.rst

@@ -63,10 +63,14 @@ In order to compile SWIFT with Grackle, you need to provide the options ``with-c
 where ``$GRACKLE_ROOT`` is the root of the install directory (not the ``lib``). 
 
 .. warning::
-  The actual Grackle version fully supported by SWIFT is 3.2.1. It can be downloaded from 
-  `the official Grackle git repository <https://github.com/grackle-project/grackle/archive/refs/tags/grackle-3.2.1.tar.gz>`_.
-  However, this version still had a bug when using threadsafe functions. Alternately, it is possible to get a fixed version
-  using `the following fork frozen for compatibility with SWIFT <https://github.com/mladenivkovic/grackle-swift>`_.
+    (State 2023) Grackle is experiencing current development, and the API is subject
+    to changes in the future. For convenience, a frozen version is hosted as a fork
+    on github here: https://github.com/mladenivkovic/grackle-swift .
+    The version available there will be tried and tested and ensured to work with
+    SWIFT.
+
+    Additionally, that repository hosts files necessary to install that specific 
+    version of grackle with spack.
 
 
 To compile it, run

examples/IsolatedGalaxy/IsolatedGalaxy_multi_component/makeDisk.py

@@ -557,7 +557,7 @@ nb3.set_tpe("stars_1")  # position expected by swift
 nb4 = nb.select("gas")
 
 if hydro == 0:
-    nb4.set_tpe("bndry")
+    nb4.set_tpe("stars_1")
 
 nb = nb1 + nb2 + nb3 + nb4