gnu: qttools-5: Patch path to qmake for the lprodump command.

This previously would lead to this cryptic error: "WARNING: Could not find
qmake spec 'default'", which turned out to be caused by lprodump erroneously
attempting to run 'qmake' from its own prefix (qmake is from the qtbase
package, not qttools).

* gnu/packages/qt.scm (qttools-5) [phases]
<patch-qmake>: New phase.

Change-Id: I6e9a2d35fec987451fd1e30b84a82023dbfd3316

1 files changed, 12 insertions, 1 deletions

diff --git a/gnu/packages/qt.scm b/gnu/packages/qt.scm
index 761d12e31f..72c36513e9 100644
--- a/gnu/packages/qt.scm
+++ b/gnu/packages/qt.scm
@@ -2171,7 +2171,18 @@ plugin for Adobe After Effects.")
                 "1bkx2sc5hyldarc7w76ymv7dlcna3ib9r2kp67jdqcf856bnrx36"))))
     (arguments
      (substitute-keyword-arguments (package-arguments qtsvg-5)
-       ((#:tests? _ #f) #f)))           ; TODO: Enable the tests
+       ((#:tests? _ #f) #f)           ; TODO: Enable the tests
+       ((#:phases phases '%standard-phases)
+        #~(modify-phases #$phases
+            (add-after 'unpack 'patch-qmake
+              (lambda* (#:key inputs #:allow-other-keys)
+                ;; Adjust the default location of the 'qmake' command known to
+                ;; the 'lprodump' command, which would otherwise look for it
+                ;; in its own bindir.
+                (substitute* "src/linguist/lprodump/main.cpp"
+                  (("app.applicationDirPath\\() \\+ QLatin1String\\(\"/qmake\")")
+                   (format #f "QLatin1String(~s)"
+                           (search-input-file inputs "bin/qmake"))))))))))
     (native-inputs (list perl qtdeclarative-5 vulkan-headers))
     (inputs (list mesa qtbase-5))
     (synopsis "Qt Tools and Designer modules")