DEVELOPERS.md: refer to set-up Spack instructions on Hive-Docs (#80)

DEVELOPERS.md

@@ -8,31 +8,9 @@ It is assumed the modifications and compilation will be done on the [NCI HPC sys
 
 Much of this is adapted from the [spack Developer Workflows Tutorial](https://spack-tutorial.readthedocs.io/en/latest/tutorial_developer_workflows.html).
 
-## Initial set-up 
+## Initial set-up
 
-It is necessary to make local copies of the following repositories using `git clone`: 
-- [`spack`](https://github.com/ACCESS-NRI/spack.git) - the build from source package manager
-- [`spack-config`](https://github.com/ACCESS-NRI/spack-config.git) - a spack configuration for `gadi`
-- [`spack-packages`](https://github.com/ACCESS-NRI/spack-packages.git) - ACCESS-NRI package repository which defines a number of the packages used by ACCESS-OM2
-
-```bash
-git clone -c feature.manyFiles=true https://github.com/ACCESS-NRI/spack.git --branch releases/v0.22 --single-branch --depth=1
-git clone https://github.com/ACCESS-NRI/spack-packages.git --branch main
-git clone https://github.com/ACCESS-NRI/spack-config.git --branch main
-```
-
-Then link all the `spack-config` settings to your local spack instance:
-```bash
-ln -s -r -v spack-config/v0.22/gadi/* spack/etc/spack/
-```
-
-> [!NOTE]
->
-> The steps in this section need only be done once, unless the cloned repositories need to be updated to a newer version.
->
-> This guide is adapted from [instructions on the ACCESS-Hive Forum](https://forum.access-hive.org.au/t/how-to-build-access-om2-on-gadi/1545)
->
-> ACCESS-NRI maintains a fork of spack to enable back-porting fixes from more recent spack versions. This fork is the one used in these instructions.
+You will first need to [Set up Spack for building ACCESS models](https://access-hive.org.au/getting_started/spack/).
 
 ## Enable spack