Subject: [PATCH 3/3] gnu: Add prusa-slicer.

From: Ivan Gankevich <[email-masked]>
Date: Sat, 24 Jul 2021 00:08:03 +0300

* gnu/packages/engineering.scm (prusa-slicer): New variable.
---
 gnu/packages/engineering.scm | 97 ++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)

diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index eec12814ff..d88520a306 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -24,6 +24,7 @@
 ;;; Copyright © 2021 qblade <[email-masked]>
 ;;; Copyright © 2021 Gerd Heber <[email-masked]>
 ;;; Copyright © 2021 Guillaume Le Vaillant <[email-masked]>
+;;; Copyright © 2021 Ivan Gankevich <[email-masked]>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -95,6 +96,7 @@
   #:use-module (gnu packages image-processing)
   #:use-module (gnu packages imagemagick)
   #:use-module (gnu packages libevent)
+  #:use-module (gnu packages libusb)
   #:use-module (gnu packages linux)               ;FIXME: for pcb
   #:use-module (gnu packages lisp)
   #:use-module (gnu packages m4)
@@ -2924,3 +2926,98 @@ a process.")
     (description "The library provides functionality for shape modelling,
 visualization, matrix manipulation.")
     (license (list license:gpl3 license:mpl2.0))))
+
+(define-public prusa-slicer
+  (package
+    (name "prusa-slicer")
+    (version "2.3.3")
+    (source
+      (origin
+        (method git-fetch)
+        (uri
+          (git-reference
+            (url "https://github.com/prusa3d/PrusaSlicer")
+            (commit (string-append "version_" version))))
+        (file-name (git-file-name name version))
+        (sha256 (base32 "0w0synqi3iz9aigsgv6x1c6sg123fasbx19h4w3ic1l48r8qmpwm"))))
+    (build-system cmake-build-system)
+    (arguments
+      `(#:configure-flags
+        '("-DSLIC3R_FHS=1" ;; Use The Filesystem Hierarchy Standard.
+          "-DSLIC3R_WX_STABLE=1") ;; Use wxWidgets 3.0.x.x to prevent GUI crashes.
+        #:phases
+        (modify-phases %standard-phases
+          ;; CMake is unable to find headers from glib, pango and gtk+
+          ;; when compiling src/slic3r. Here we add them via environment variables.
+          (add-before 'configure 'add-glib-pango-gtk+
+            (lambda _
+              (use-modules
+                (ice-9 popen)
+                (ice-9 textual-ports))
+              (define (append-flags name flags)
+                (define old-value (getenv name))
+                (setenv name (if old-value (string-append old-value " " flags) flags)))
+              (define (pkg-config args)
+                (let* ((port (open-input-pipe (string-join (cons "pkg-config" args) " ")))
+                       (content (string-trim-both (get-string-all port))))
+                  (close-pipe port)
+                  content))
+              (define deps '("glib-2.0" "pango" "gtk+-2.0" "hidapi-hidraw"))
+              (define cflags (pkg-config (cons "--cflags" deps)))
+              (define ld-flags (pkg-config (cons "--libs" deps)))
+              (define libigl (assoc-ref %build-inputs "libigl"))
+              (append-flags "CXXFLAGS" cflags)
+              (append-flags "CFLAGS" cflags)
+              (append-flags "LDFLAGS" ld-flags)
+              (append-flags "CFLAGS" (string-append "-I" libigl "/include"))
+              (append-flags "LDFLAGS" (string-append "-L" libigl "/lib"))))
+          (add-before 'configure 'unbundle-3d-party-libraries
+            ;; Prusa slicer bundles a lot of dependencies in src/ directory.
+            ;; Most of them contain prusa-specific modifications (e.g. avrdude),
+            ;; but others do not. Here we replace the latter with Guix packages.
+            (lambda _
+              (delete-file-recursively "src/hidapi")
+              (delete-file-recursively "src/eigen")
+              (delete-file-recursively "src/libigl/igl")
+              (substitute* "src/CMakeLists.txt"
+                (("add_subdirectory\\(libigl\\)" all)
+                 (string-append
+                   all "\ninclude_directories(libigl INTERFACE libigl::core)"))
+                (("add_subdirectory\\(hidapi\\)") "")
+                (("include_directories\\(hidapi/include\\)") ""))
+              ;; Do not link with bundled hidapi library.
+              (substitute* "src/slic3r/CMakeLists.txt"
+                (("\\bhidapi\\b") "")))))))
+    (native-inputs
+      `(("pkg-config" ,pkg-config)))
+    (inputs
+      `(("boost" ,boost)
+        ("libigl" ,libigl)
+        ("tbb" ,tbb)
+        ("curl" ,curl)
+        ("zlib" ,zlib)
+        ("eigen" ,eigen)
+        ("expat" ,expat)
+        ("mesa" ,mesa)
+        ("cereal" ,cereal)
+        ("nlopt" ,nlopt)
+        ("openvdb" ,openvdb)
+        ("ilmbase" ,ilmbase)
+        ("cgal" ,cgal)
+        ("hidapi" ,hidapi)
+        ;;("wxwidgets" ,wxwidgets-gtk2-3.1) ;; crashes when adding support enforcers
+        ("wxwidgets" ,wxwidgets-gtk2)
+        ("glew" ,glew)
+        ("udev" ,eudev)
+        ("gmp" ,gmp)
+        ("mpfr" ,mpfr)
+        ("libpng" ,libpng)
+        ("dbus" ,dbus)
+        ("glib" ,glib)
+        ("pango" ,pango)
+        ("gtk" ,gtk+-2)))
+    (home-page "https://www.prusa3d.com/prusaslicer/")
+    (synopsis "G-code generator for 3D printers (RepRap, Makerbot, Ultimaker etc.)")
+    (description "PrusaSlicer takes 3D models (STL, OBJ, AMF) and converts them into
+G-code instructions for FFF printers or PNG layers for mSLA 3D printers.")
+    (license license:agpl3)))
-- 
2.32.0