gnu: Add python-gatspy.

* gnu/packages/bioinformatics.scm (python-gatspy): New variable.

gnu/packages/astronomy.scm

@@ -562,6 +562,39 @@ CFITSIO library.  Among other things, it can
 @end itemize")
     (license license:gpl2+)))
 
+(define-public python-gatspy
+  (package
+    (name "python-gatspy")
+    (version "0.3")
+    (source (origin
+              (method url-fetch)
+              (uri (pypi-uri "gatspy" version))
+              (sha256
+               (base32
+                "1gw2z6x8nikvnw2gkdl70gr81cwczd1pd7v8ry2kjn6k4kssrfav"))))
+    (build-system pyproject-build-system)
+    (arguments
+     (list
+      #:phases
+      '(modify-phases %standard-phases
+         ;; Tests need this
+         (add-before 'check 'set-HOME
+           (lambda _ (setenv "HOME" "/tmp"))))
+      #:test-flags
+      '(list "-k"
+             (string-append
+              ;; These tests require internet access
+              "not test_download_data.py"
+              ;; XXX: we don't have supersmoother
+              " and not test_supersmoother.py"))))
+    (propagated-inputs (list python-astroml python-numpy python-scipy))
+    (native-inputs (list python-pytest python-nose python-setuptools-scm))
+    (home-page "https://github.com/astroml/gatspy")
+    (synopsis "General tools for astronomical time series in Python")
+    (description "This package provides general tools for astronomical time
+series in Python.")
+    (license license:bsd-2)))
+
 (define-public qfits
   (package
     (name "qfits")