[bug#41807] [PATCH 22/26] gnu: Add python-libcst.

[Giacomo Leidi <goodoldpaul@autistici.org>]

* gnu/packages/python-xyz.scm (python-libcst): New variable.
---
 gnu/packages/python-xyz.scm | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index 6cff8a0263..85b71763ae 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -20427,3 +20427,34 @@ runtime inspection of types defined in the Python standard typing module.")
       "This is an implementation of PEP 557, Data Classes. It is a
 backport of the @code{dataclasses} module for Python 3.6.")
     (license license:asl2.0)))
+
+(define-public python-libcst
+  (package
+    (name "python-libcst")
+    (version "0.3.6")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (pypi-uri "libcst" version))
+        (sha256
+          (base32
+            "1lxwjw3a302i0ka3ykcsc1r4c94zskzlgn3rqs2h0kmchp0g74qz"))))
+    (build-system python-build-system)
+    (arguments
+     ;; FIXME: Tests depend on python-hypothesmith and python-pyre-check,
+     ;; introducing a circular dependency.
+     '(#:tests? #f))
+    (propagated-inputs
+      `(("python-dataclasses" ,python-dataclasses)
+        ("python-pyyaml" ,python-pyyaml)
+        ("python-typing-extensions"
+         ,python-typing-extensions)
+        ("python-typing-inspect" ,python-typing-inspect)))
+    (home-page "https://github.com/Instagram/LibCST")
+    (synopsis
+      "Concrete Syntax Tree (CST) parser and serializer library for Python")
+    (description
+      "LibCST parses Python 3.0, 3.1, 3.3, 3.5, 3.6, 3.7 or 3.8 source code
+as a CST tree that keeps all formatting details (comments, whitespaces, parentheses,
+etc.).  It's useful for building automated refactoring applications and linters.")
+    (license license:expat)))
-- 
2.26.2