Rework the builds and build_status tables as well as related code

Allow for build status information to be submitted by POST request. This
required some changes to the builds and build_status tables, as for example,
the Cuirass build id may not be available, and the derivation may not be know
yet, so just record the derivation file name.

scripts/guix-data-service-query-build-servers.in

@@ -23,6 +23,7 @@
 (use-modules (srfi srfi-1)
              (srfi srfi-37)
              (squee)
+             (guix-data-service database)
              (guix-data-service builds))
 
 (with-postgresql-connection "query-build-servers"

scripts/guix-data-service.in

@@ -25,6 +25,7 @@
 
 (use-modules (srfi srfi-1)
              (srfi srfi-37)
+             (ice-9 textual-ports)
              (system repl server)
              (guix-data-service config)
              (guix-data-service web server))
@@ -49,6 +50,12 @@
                   (alist-cons 'pid-file
                               arg
                               result)))
+        (option '("secret-key-base-file") #t #f
+                (lambda (opt name arg result)
+                  (alist-cons 'secret-key-base
+                              (string-trim-right
+                               (call-with-input-file arg get-string-all))
+                              result)))
         (option '("update-database") #f #f
                 (lambda (opt name _ result)
                   (alist-cons 'update-database #t result)))
@@ -123,4 +130,5 @@
                  (assq-ref opts 'port))
 
   (start-guix-data-service-web-server (assq-ref opts 'port)
-                                      (assq-ref opts 'host)))
+                                      (assq-ref opts 'host)
+                                      (assq-ref opts 'secret-key-base)))