Test suite can't be executed from hackage tarball

The test suite uses the example files from examples/*, but since they aren't listed under extra-source-files, it fails:

Test suite geomancy-layout-test: RUNNING...
Examples
  Tree:        FAIL
    Exception: examples/Tree.svg: withBinaryFile: does not exist (No such file or directory)
    Use -p '/Tree/' to rerun this test only.
  Halves:      FAIL
    Exception: examples/Halves.svg: withBinaryFile: does not exist (No such file or directory)
    Use -p '/Halves/' to rerun this test only.
  Overflow:    FAIL
    Exception: examples/Overflow.svg: withBinaryFile: does not exist (No such file or directory)
    Use -p '/Overflow/' to rerun this test only.
  Framed:      FAIL
    Exception: examples/Framed.svg: withBinaryFile: does not exist (No such file or directory)
    Use -p '/Framed/' to rerun this test only.
  Nested:      FAIL
    Exception: examples/Nested.svg: withBinaryFile: does not exist (No such file or directory)
    Use -p '/Nested/' to rerun this test only.
  Dynamic:     FAIL
    Exception: examples/Dynamic.svg: withBinaryFile: does not exist (No such file or directory)
    Use -p '$0=="Examples.Dynamic"' to rerun this test only.
  DynamicVert: FAIL
    Exception: examples/DynamicVert.svg: withBinaryFile: does not exist (No such file or directory)
    Use -p '/DynamicVert/' to rerun this test only.

7 out of 7 tests failed (0.00s)
Test suite geomancy-layout-test: FAIL
Test suite logged to: dist/test/geomancy-layout-0.1.1-geomancy-layout-test.log
0 of 1 test suites (0 of 1 test cases) passed.