GNU bug report logs - #57774
[PATCH] Add qucs-s.

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From: Garek Dyszel <garekdyszel <at> disroot.org>
To: 57774 <at> debbugs.gnu.org
Subject: [bug#57774] [PATCH] Add qucs-s.
Date: Tue, 13 Sep 2022 11:48:40 -0400

* gnu/packages/engineering.scm (qucs-s): New variable.
---
 gnu/packages/engineering.scm | 74 ++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index a8b9f1e786..376cb7e8c1 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -2006,6 +2006,80 @@ (define-public xyce-parallel
        ,@(alist-delete "trilinos"
                        (package-inputs xyce-serial))))))
 
+(define-public qucs-s
+  (package
+    (name "qucs-s")
+    (version "0.0.24")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/ra3xdh/qucs_s")
+                    (commit version)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1lbkaw0grw9w7d37z5dbhaqi8p57cpf9yp071zp6xrairkgimdx8"))))
+    (build-system qt-build-system)
+    (outputs '("out"))
+    (inputs (list qtbase-5 qtscript qtsvg-5))
+    (native-inputs (list qttools-5))
+    (propagated-inputs (list ngspice))
+    (arguments
+     `(;; There exists no "tests" target in the Makefile generated by
+       ;; CMake.
+       ;; No other tests provided.
+       #:tests? #f
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'install 'get-ngspice-path
+           (lambda* (#:key inputs #:allow-other-keys)
+             ;; Adjust two lines in the ~/.config/qucs/qucs_s.conf
+             ;; file.
+             (mkdir-p "etc/xdg/qucs_s")
+             (with-directory-excursion "etc/xdg/qucs_s"
+               (invoke "touch" "qucs_s.conf")
+               ;; Specify where the ngspice executable is located.
+               (invoke "sed" "-i"
+                       (string-append "1iNgspiceExecutable=/gnu/store/"
+                                      (assoc-ref inputs "ngspice")
+                                      "/bin/ngspice") "qucs_s.conf")
+               ;; Set the spice4qucs working directory to
+               ;; ~/.qucs/spice4qucs.
+               ;; (The default is /spice4qucs, which is rather
+               ;; dangerous.)
+               (invoke "sed" "-i" "2iS4Q_workdir=~/.qucs/spice4qucs"
+                       "qucs_s.conf")))))))
+
+    (home-page "https://ra3xdh.github.io")
+    (synopsis "QUCS RF circuit simulator with SPICE")
+    (description
+     "Qucs-S is a spin-off of the Qucs cross-platform circuit
+simulator.  The \"S\" letter indicates SPICE.  The purpose of the Qucs-S
+subproject is to use free SPICE circuit simulation kernels with the
+Qucs GUI.  It merges the power of SPICE and the simplicity of the Qucs
+GUI.  Qucs intentionally uses its own SPICE incompatible simulation
+kernel Qucsator.  It has advanced RF and AC domain simulation features,
+but most of the existing industrial SPICE models are incompatible with
+it.  Qucs-S is not a simulator by itself, but it requires to use a
+simulation backend with it.  The schematic document format of Qucs and
+Qucs-S are fully compatible.  Qucs-S can be used with the following
+simulation kernels:
+@itemize
+@item Ngspice is recommended to use.  Ngspice is powerful
+mixed-level/mixed-signal circuit simulator.  The most of industrial
+SPICE models are compatible with Ngspice.  It has an excellent
+performance for time-domain simulation of switching circuits and
+powerful postprocessor.
+@item XYCE is a new SPICE-compatible circuit simulator written by
+Sandia from the scratch.  It supports basic SPICE simulation types and
+has an advanced RF simulation features such as harmonic balance
+simulation.
+@item SpiceOpus is developed by the Faculty of Electrical Engineering
+of the Ljubljana University.  It is based on the SPICE-3f5 code.
+@item Backward compatible with Qucsator.
+@end itemize")
+    (license license:gpl2)))
+
 (define-public freehdl
   (package
     (name "freehdl")
-- 
2.37.2

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