* gnu/service/web.scm (<hpcguix-web-configuration>): New record-type.
  (%hpcguix-web-accounts): New variable.
  (%hpcguix-web-activation,hpcguix-web-shepherd-service,
  hpcguix-web-service-type): New procedures.
* gnu/tests/web.scm (run-hpcguix-web-server-test): New procedure.
  (%hpcguix-web-specs, %hpcguix-web-os, %test-hpcguix-web): New variable.
* doc/guix.texi (Web Services): Add 'hpcguix-web'.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>