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-rw-r--r--gnu/packages/machine-learning.scm14
1 files changed, 8 insertions, 6 deletions
diff --git a/gnu/packages/machine-learning.scm b/gnu/packages/machine-learning.scm
index d71428034d..11c9b0207e 100644
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -1730,7 +1730,7 @@ Python.")
                   ((guix build python-build-system)
                    #:select (python-version)))
        #:imported-modules (,@%cmake-build-system-modules
-                            (guix build python-build-system))
+                           (guix build python-build-system))
        #:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'set-source-file-times-to-1980
@@ -1853,8 +1853,7 @@ set(eigen_INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR}/external/eigen_archive "
                (("tf_core_cpu grpc") "tf_core_cpu"))
 
              ;; This directory is a dependency of many targets.
-             (mkdir-p "protobuf")
-             #t))
+             (mkdir-p "protobuf")))
          (add-after 'configure 'unpack-third-party-sources
            (lambda* (#:key inputs #:allow-other-keys)
              ;; This is needed to configure bundled packages properly.
@@ -1932,17 +1931,20 @@ COMPILE_FLAGS ${target_compile_flags} \
 INSTALL_RPATH_USE_LINK_PATH TRUE \
 INSTALL_RPATH " (assoc-ref outputs "out") "/lib)\n")))))
          (add-after 'build 'build-pip-package
-           (lambda* (#:key outputs #:allow-other-keys)
+           (lambda* (#:key outputs parallel-build? #:allow-other-keys)
              (setenv "LDFLAGS"
                      (string-append "-Wl,-rpath="
                                     (assoc-ref outputs "out") "/lib"))
-             (invoke "make" "tf_python_build_pip_package")))
+             (invoke "make" "-j" (if parallel-build?
+                                     (number->string (parallel-job-count))
+                                     "1")
+                     "tf_python_build_pip_package")))
          (add-after 'build-pip-package 'install-python
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (let ((out (assoc-ref outputs "out"))
                    (wheel (car (find-files "../build/tf_python/dist/" "\\.whl$")))
                    (python-version (python-version
-                                     (assoc-ref inputs "python"))))
+                                    (assoc-ref inputs "python"))))
                (invoke "python" "-m" "pip" "install" wheel
                        (string-append "--prefix=" out))