[WIP] working Guix project config file

TODO: implement possibility to build from the GitHub repo OR without hdf5

tools/trexio.scm

@@ -0,0 +1,34 @@
+(define-module (gnu packages trexio)
+  #:use-module (guix packages)
+  #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages glib)
+  #:use-module (gnu packages gcc)
+  #:use-module (gnu packages autotools)
+  #:use-module (gnu packages maths)
+  #:use-module (guix download)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix licenses))
+
+(define-public trexio
+  (package
+    (name "trexio")
+    (version "2.0")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://github.com/TREX-CoE/trexio/releases/download/v" version
+				  "/trexio-" version ".0"
+                                  ".tar.gz"))
+              (sha256
+               (base32
+		"1d2cn4w2r9gfid5b9wrq9q290kqdnbjdmvli76s1i5r58kdg5vkf"
+                ))))
+    (build-system gnu-build-system)
+    (arguments '(#:configure-flags '("--enable-silent-rules")))
+    (inputs `(("hdf5" ,hdf5-1.12) ("gfortran", gfortran)))
+    (synopsis "TREX I/O lbrary: trexio package")
+    (description "APIs in C and Fortran to exchange wavefunction data.
+		  Supports HDF5 and TEXT back ends.")
+    (home-page "https://trex-coe.github.io/trexio")
+    (license bsd-3)))
+
+trexio