[bug#52165] [PATCH core-updates-frozen 2/2] gnu: Add kalgebra.

[Vinicius Monego <monego@posteo.net>]

* gnu/packages/kde.scm (kalgebra): New variable.
---
 gnu/packages/kde.scm | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/gnu/packages/kde.scm b/gnu/packages/kde.scm
index 94e46af99f..2a78ed0b88 100644
--- a/gnu/packages/kde.scm
+++ b/gnu/packages/kde.scm
@@ -70,12 +70,14 @@
   #:use-module (gnu packages llvm)
   #:use-module (gnu packages markup)
   #:use-module (gnu packages maths)
+  #:use-module (gnu packages ncurses)
   #:use-module (gnu packages pdf)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages photo)
   #:use-module (gnu packages pkg-config)
   #:use-module (gnu packages pulseaudio)
   #:use-module (gnu packages python)
+  #:use-module (gnu packages readline)
   #:use-module (gnu packages tls)
   #:use-module (gnu packages qt)
   #:use-module (gnu packages version-control)
@@ -1083,6 +1085,44 @@ and some numerical methods; for instance the library can parse mathematical
 expressions and let you evaluate and draw them.")
     (license license:gpl2+)))
 
+(define-public kalgebra
+  (package
+    (name "kalgebra")
+    (version "21.04.3") ; newer versions require ECM >= 5.83.0
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://invent.kde.org/education/kalgebra")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "07vmw924pig35az4s35i9z5ypkzv4d29pplmgqwvz0ldwz3aq456"))))
+    (build-system qt-build-system)
+    (native-inputs
+     `(("extra-cmake-modules" ,extra-cmake-modules)))
+    (inputs
+     `(("analitza" ,analitza)
+       ("kconfigwidgets" ,kconfigwidgets)
+       ("kcoreaddons" ,kcoreaddons)
+       ("kdoctools" ,kdoctools)
+       ("ki18n" ,ki18n)
+       ("kio" ,kio)
+       ("kwidgetsaddons" ,kwidgetsaddons)
+       ("ncurses" ,ncurses)
+       ("qtbase" ,qtbase-5)
+       ("qtdeclarative" ,qtdeclarative)
+       ("qtsvg" ,qtsvg)
+       ("qtwebengine" ,qtwebengine)
+       ("qtwebchannel" ,qtwebchannel)
+       ("readline" ,readline)))
+    (home-page "https://edu.kde.org/kalgebra/")
+    (synopsis "Calculator and plotting tool")
+    (description "KAlgebra is a calculator that lets you plot different types
+of 2D and 3D functions and to calculate easy (and not so easy) calculations,
+such as addition, trigonometric functions or derivatives.")
+    (license license:gpl2+)))
+
 (define-public poxml
   (package
     (name "poxml")
-- 
2.30.2