Fix Go version discovery on Ubuntu versions

Author: deneb-alpha

uyuni-tools.spec

@@ -83,8 +83,14 @@ BuildRequires:  golang(API) >= 1.25
 
 %if 0%{?ubuntu}
 %define go_version      1.22
+# On Ubuntu 22.04, the metapackage golang is too old (1.18) and
+# we must use the versioned package name specifically for this OS version.
+%if "%{?ubuntu}" == 2204
+BuildRequires:  golang-%{go_version}-go
+%else
 BuildRequires:  golang >= %{go_version}
 %endif
+%endif
 # ubuntu
 
 %if 0%{?debian}
@@ -324,15 +330,34 @@ go_tags=""
 
 go_path=""
 %if 0%{?ubuntu}
-  if test -d /usr/lib/go-%{go_version}/bin/; then
-    go_path=/usr/lib/go-%{go_version}/bin/
-  fi
+  max_major=0
+  max_minor=0
+
+  for dir in /usr/lib/go-*/bin; do
+    if [ -x "$dir/go" ]; then
+      # Extract version string (e.g., from /usr/lib/go-1.22/bin to 1.22)
+      v_str="${dir%/bin}"
+      v_str="${v_str#/usr/lib/go-}"
+
+      # Split 1.22 into major (1) and minor (22)
+      major="${v_str%.*}"
+      minor="${v_str#*.}"
+
+      # If major is higher, or if major is equal and minor is higher, update go_path
+      if [ "$major" -gt "$max_major" ]; then
+        max_major=$major
+        max_minor=$minor
+        go_path="$dir/"
+      elif [ "$major" -eq "$max_major" ] && [ "$minor" -gt "$max_minor" ]; then
+        max_minor=$minor
+        go_path="$dir/"
+      fi
+    fi
+  done
 %else
   %if "%{?_go_bin}" != ""
     go_path='%{_go_bin}/'
   %endif
-# "_go_bin" != ""
-
 %endif
 # ubuntu