gnu: python-jedi: Update to 0.16.

* gnu/packages/patches/python-jedi-deleted-variables.patch: New file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.
* gnu/packages/python-xyz.scm (python-jedi): Update to 0.16.
[source](patches): New field.

gnu/local.mk

@@ -1330,6 +1330,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/python-pep8-stdlib-tokenize-compat.patch \
   %D%/packages/patches/python-pyfakefs-remove-bad-test.patch	\
   %D%/packages/patches/python-flint-includes.patch		\
+  %D%/packages/patches/python-jedi-deleted-variables.patch	\
   %D%/packages/patches/python-libxml2-utf8.patch		\
   %D%/packages/patches/python-mox3-python3.6-compat.patch	\
   %D%/packages/patches/python-testtools.patch			\

gnu/packages/patches/python-jedi-deleted-variables.patch

@@ -0,0 +1,38 @@
+Fix test failure in some environments, including Guix.
+
+Taken from upstream:
+https://github.com/davidhalter/jedi/commit/bec87f7ff82b0731713c6520a14c213341b4cecf
+
+diff --git a/test/completion/basic.py b/test/completion/basic.py
+index b40068179..3ff919ca6 100644
+--- a/test/completion/basic.py
++++ b/test/completion/basic.py
+@@ -209,11 +209,11 @@ def global_as_import():
+ 
+ deleted_var = 3
+ del deleted_var
+-#? int()
++#?
+ deleted_var
+-#? ['deleted_var']
++#? []
+ deleted_var
+-#! ['deleted_var = 3']
++#! []
+ deleted_var
+ 
+ # -----------------
+diff --git a/test/test_api/test_full_name.py b/test/test_api/test_full_name.py
+index 4fdb861b0..6858b6ca8 100644
+--- a/test/test_api/test_full_name.py
++++ b/test/test_api/test_full_name.py
+@@ -112,7 +112,8 @@ def test_os_path(Script):
+ 
+ def test_os_issues(Script):
+     """Issue #873"""
+-    assert [c.name for c in Script('import os\nos.nt''').complete()] == ['nt']
++    # nt is not found, because it's deleted
++    assert [c.name for c in Script('import os\nos.nt''').complete()] == []
+ 
+ 
+ def test_param_name(Script):

gnu/packages/python-xyz.scm

@@ -11217,25 +11217,19 @@ characters, mouse support, and auto suggestions.")
 (define-public python-jedi
   (package
     (name "python-jedi")
-    (version "0.15.1")
+    (version "0.16.0")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "jedi" version))
+       (patches (search-patches "python-jedi-deleted-variables.patch"))
        (sha256
         (base32
-         "0bp4pxhsynaarbvzblsn5x32lzp29svy3sxfy8i6m5iwz9s9r1ds"))))
+         "1mb5kmrk9bkc3kwzx02j62cdan1jqd92q1z7h7wi9d30jg5p3j6m"))))
     (build-system python-build-system)
     (arguments
      `(#:phases
        (modify-phases %standard-phases
-         (add-after 'unpack 'disable-file-completion-test
-           ;; A single parameterized test currently fail (see:
-           ;; https://github.com/davidhalter/jedi/issues/1395).  Remove it.
-           (lambda _
-             (substitute* "test/test_api/test_completion.py"
-               ((".*'example.py', 'rb\"' \\+ join\\('\\.\\.'.*") ""))
-             #t))
          (replace 'check
            (lambda _
              (setenv "HOME" "/tmp")