From 6b0011c8f1293510a784a0eaa0a2a10e03339f16 Mon Sep 17 00:00:00 2001
From: Jordan Galby <67924449+Jordan474@users.noreply.github.com>
Date: Wed, 28 Aug 2024 18:38:54 +0200
Subject: [PATCH] For "when:" and install_environment.json: Support fully
 qualified hostname (#45522)

---
 lib/spack/docs/environments.rst | 5 +++--
 lib/spack/spack/spec.py         | 1 +
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/spack/docs/environments.rst b/lib/spack/docs/environments.rst
index ffa5e5f3c38..b3dd57840b0 100644
--- a/lib/spack/docs/environments.rst
+++ b/lib/spack/docs/environments.rst
@@ -893,8 +893,9 @@ The valid variables for a ``when`` clause are:
 
 #. ``env``. The user environment (usually ``os.environ`` in Python).
 
-#. ``hostname``. The hostname of the system (if ``hostname`` is an
-   executable in the user's PATH).
+#. ``hostname``. The hostname of the system.
+
+#. ``full_hostname``. The fully qualified hostname of the system.
 
 ^^^^^^^^^^^^^^^^^^^^^^^^
 SpecLists as Constraints
diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py
index 1fb21b348ba..92e70e90da5 100644
--- a/lib/spack/spack/spec.py
+++ b/lib/spack/spack/spec.py
@@ -4892,6 +4892,7 @@ def get_host_environment() -> Dict[str, Any]:
         "architecture": arch_spec,
         "arch_str": str(arch_spec),
         "hostname": socket.gethostname(),
+        "full_hostname": socket.getfqdn(),
     }