gnu: Add python-timezonefinder.

* gnu/packages/time.scm (python-timezonefinder): New variable.
* gnu/packages/geo.scm (h3-3, python-h3-3): New variables. The latest
compatible versions to build python-timezonefinder.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/geo.scm

@@ -251,6 +251,23 @@ combining the benefits of a hexagonal grid with S2's hierarchical
 subdivisions.")
     (license license:asl2.0)))
 
+;; For python-timezonefinder, remove it when it starts supporting newer
+;; version.
+(define-public h3-3
+  (package
+    (inherit h3)
+    (name "h3")
+    (version "3.7.2")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/uber/h3")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "0bvsljfxmjvl23v9gxykc4aynjzh5xfy3wg02bxad7cknr1amx9j"))))))
+
 (define-public python-h3
   (package
     (name "python-h3")
@@ -305,6 +322,26 @@ subdivisions.")
 hierarchical hexagonal geospatial indexing system")
     (license license:asl2.0)))
 
+;; For python-timezonefinder, remove it when it starts supporting newer
+;; version.
+(define-public python-h3-3
+  (package
+    (inherit python-h3)
+    (name "python-h3")
+    (version "3.7.6")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/uber/h3-py")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "16gxa1sivghxw179rik87r918mjasars2qkzidlwq83qfa4axn20"))))
+    (inputs
+     (modify-inputs (package-inputs python-h3)
+       (replace "h3" h3-3)))))
+
 (define-public memphis
   (package
     (name "memphis")

gnu/packages/time.scm

@@ -21,6 +21,7 @@
 ;;; Copyright © 2021 Ryan Prior <rprior@protonmail.com>
 ;;; Copyright © 2021 Foo Chuan Wei <chuanwei.foo@hotmail.com>
 ;;; Copyright © 2022 Pradana AUMARS <paumars@courrier.dev>
+;;; Copyright © 2023 Sharlatan Hellseher <sharlatanus@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -40,7 +41,9 @@
 (define-module (gnu packages time)
   #:use-module (gnu packages check)
   #:use-module (gnu packages compression)
+  #:use-module (gnu packages geo)
   #:use-module (gnu packages golang)
+  #:use-module (gnu packages libffi)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages python)
   #:use-module (gnu packages python-build)
@@ -50,8 +53,10 @@
   #:use-module (gnu packages)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system go)
+  #:use-module (guix build-system pyproject)
   #:use-module (guix build-system python)
   #:use-module (guix download)
+  #:use-module (guix gexp)
   #:use-module (guix git-download)
   #:use-module (guix licenses)
   #:use-module (guix packages))
@@ -278,6 +283,38 @@ datetime module, available in Python 2.3+.")
 Python datetime objects.")
     (license expat)))
 
+(define-public python-timezonefinder
+  (package
+    (name "python-timezonefinder")
+    (version "6.2.0")
+    (source
+     (origin
+       (method git-fetch)
+       ;; The PyPi distribution doesn't include the tests.
+       (uri (git-reference
+             (url "https://github.com/jannikmi/timezonefinder")
+             (commit version)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "0qv9rh6j8c1cqwh4sxrfl1m1ah4aqrf0w2kyrf5cgrpfxi6xr94z"))))
+    (build-system pyproject-build-system)
+    (arguments
+     (list
+      ;; TODO: Guix has lower python-pytz than required in the latest
+      ;; version:  pytz.exceptions.UnknownTimeZoneError:
+      ;; 'America/Ciudad_Juarez'
+      ;; It's optional, remove this constrain where python-pytz is updated.
+      #:test-flags #~(list "-k" "not test_with_pytz")))
+    (native-inputs
+     (list python-poetry-core python-pytest))
+    (propagated-inputs
+     (list python-cffi python-h3-3 python-numba python-numpy python-pytz))
+    (home-page "https://timezonefinder.michelfe.it/gui")
+    (synopsis "Finding the timezone of any coordinates on Earth offline")
+    (description "This is a python package for looking up the corresponding
+timezone for given coordinates on earth entirely offline.")
+    (license expat)))
+
 (define-public python-tzlocal
   (package
     (name "python-tzlocal")