add page for unsupported software

docs/policies/support.md

@@ -1,4 +1,5 @@
-# UserLab Support Policy
+[](){#ref-support}
+# User Support Policy
 
 ## 1. User Support Policy
 
@@ -23,6 +24,7 @@ CSCS reserves the right to decline support for requests that fall outside the sc
 Support will be focused on ensuring that the resources are used in alignment with the approved objectives and goals.
 Requests that significantly deviate from the original proposal may not be accommodated.
 
+[](){#ref-support-user-apps}
 ## 3. User Applications
 
 User applications are those brought to CSCS systems by the users, whether they are developed by the users themselves or another third-party.
@@ -32,6 +34,7 @@ CSCS will provide guidance on deploying applications on our systems, including c
 While we can assist with infrastructure-related issues, we can not configure, optimize, debug, or fix the applications themselves.
 Users are responsible for resolving application-specific issues themselves or contacting the respective developers.
 
+[](){#ref-support-apps}
 ## 4. Officially Supported Applications
 
 CSCS offers a range of officially supported applications and their respective versions and configurations, which are packaged and released by CSCS or its supply partners.

docs/software/unsupported.md

@@ -0,0 +1,20 @@
+[](){ref-software-unsupported}
+# Unsupported Software
+
+This page documents frequently-requested applications that CSCS won't provide pre-built on Alps as [supported software][ref-support-apps].
+
+!!! warning "License terms"
+    Often it is impossible or difficult to provide software for licensing reasons.
+
+    Note that if users are asked to install licensed software because CSCS can't, it is the responsibility of users to ensure that the software is only available to them personally, or to members of their group who are also permitted by the license to access the software.
+
+## Gaussian
+
+The electronic structure modeling code [Gaussian](https://gaussian.com/) has license terms that prohibit installing and using it on CSCS systems under any circumstances.
+
+## Matlab
+
+CSCS does not have a license to provide [Matlab](https://www.mathworks.com/products/matlab.html) to users on Alps.
+
+Users or groups with valid licenses can install Matlab themselves as [user software][ref-support-user-apps].
+Please ensure that you install the software in a location where only members of your group who are allowed to use Matlab can access it.

mkdocs.yml

@@ -80,6 +80,7 @@ nav:
       #- 'Performance Analysis': software/devtools/perf/index.md
     - 'uenv': software/uenv.md
     - 'Container Engine': software/container-engine.md
+    - 'Unsupported Software': software/unsupported.md
   - 'Services':
     - services/index.md
     - 'FirecREST': services/firecrest.md