gnu: Add skymaker.

* gnu/packages/astronomy.scm (skymaker): New variable.

Signed-off-by: Guillaume Le Vaillant <glv@posteo.net>

gnu/packages/astronomy.scm

@@ -229,6 +229,36 @@ (define-public sextractor
 crowded star fields.")
     (license license:gpl3+)))
 
+(define-public skymaker
+  (package
+    (name "skymaker")
+    (version "3.10.5")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://www.astromatic.net/download/skymaker/"
+                           "skymaker-" version ".tar.gz"))
+       (sha256
+        (base32 "03zvx7c89plp9559niqv5532r233kza3ir992rg3nxjksqmrqvx1"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:configure-flags
+       (list
+        (string-append
+         "--with-fftw-libdir=" (assoc-ref %build-inputs "fftw") "/lib")
+        (string-append
+         "--with-fftw-incdir=" (assoc-ref %build-inputs "fftw") "/include"))))
+    (inputs
+     `(("fftw" ,fftwf)))
+    (home-page "https://www.astromatic.net/software/skymaker")
+    (synopsis "Astronomical image simulator")
+    (description
+     "SkyMaker is a program that simulates astronomical images.  It accepts
+object lists in ASCII generated by the Stuff program to produce realistic
+astronomical fields.  SkyMaker is part of the EFIGI
+(@url{https://www.astromatic.net/projects/efigi}) development project.")
+    (license license:gpl3+)))
+
 (define-public stellarium
   (package
     (name "stellarium")