schema: Builds: Add 'evaluation' column.

* src/schema.sql (Builds): Add 'evaluation' column.
* src/cuirass/database.scm (db-add-build): Adapt.
* src/cuirass/base.scm (build-packages): Likewise.

src/cuirass/base.scm

@@ -121,19 +121,21 @@ if required."
   (map (λ (job)
          (let ((log-port (%make-void-port "w0"))
                (name     (assq-ref job #:job-name))
-               (drv      (assq-ref job #:derivation)))
+               (drv      (assq-ref job #:derivation))
+               (eval-id  (assq-ref job #:eval-id)))
            (simple-format #t "building ~A...\n" drv)
            (parameterize ((current-build-output-port log-port))
              (build-derivations store (list drv))
              (let* ((output (derivation-path->output-path drv))
                     (log    (log-file store output))
                     (build  `((#:derivation . ,drv)
+                              (#:eval-id . ,eval-id)
                               (#:log . ,log)
-                              (#:output . ,output)))
-                    (id     (db-add-build db build)))
-               (close-port log-port)
+                              (#:output . ,output))))
+               (db-add-build db build)
                (simple-format #t "~A\n" output)
-               (acons #:id id build)))))
+               (close-port log-port)
+               build))))
        jobs))
 
 (define (process-specs db jobspecs)

src/cuirass/database.scm

@@ -180,8 +180,10 @@ string."
 (define (db-add-build db build)
   "Store BUILD in database DB."
   (sqlite-exec db "\
-INSERT INTO Builds (derivation, log, output) VALUES ('~A', '~A', '~A');"
+INSERT INTO Builds (derivation, evaluation, log, output)\
+  VALUES ('~A', '~A', '~A', '~A');"
                (assq-ref build #:derivation)
+               (assq-ref build #:eval-id)
                (assq-ref build #:log)
                (assq-ref build #:output))
   (last-insert-rowid db))

src/schema.sql

@@ -34,12 +34,16 @@ CREATE TABLE Derivations (
   FOREIGN KEY (evaluation) REFERENCES Evaluations (id)
 );
 
+-- Builds are not in a one to one relationship with derivations in order to
+-- keep track of non deterministic compilations.
 CREATE TABLE Builds (
-  id              INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
-  derivation      TEXT NOT NULL,
-  log             TEXT NOT NULL,
-  output          TEXT,         -- NULL if build failed
-  FOREIGN KEY (derivation) REFERENCES Evaluations (derivation)
+  derivation    TEXT NOT NULL,
+  evaluation    INTEGER NOT NULL,
+  log           TEXT NOT NULL,
+  output        TEXT,		-- NULL if build failed
+  PRIMARY KEY (derivation, evaluation),
+  FOREIGN KEY (derivation) REFERENCES Derivations (derivation),
+  FOREIGN KEY (evaluation) REFERENCES Evaluations (id)
 );
 
 COMMIT;