From 297d1d6b83c92c4f6942c6479f176d8004a819dd Mon Sep 17 00:00:00 2001
From: Arnout Engelen <arnout@bzzt.net>
Date: Mon, 14 Sep 2020 13:42:17 +0200
Subject: [PATCH] inkscape: add inkcut extension

---
 .../graphics/inkscape/extensions.nix          |  6 ++
 ...e-clash-between-inkcut-and-extension.patch | 85 +++++++++++++++++++
 pkgs/applications/misc/inkcut/default.nix     | 15 ++++
 3 files changed, 106 insertions(+)
 create mode 100644 pkgs/applications/misc/inkcut/avoid-name-clash-between-inkcut-and-extension.patch

diff --git a/pkgs/applications/graphics/inkscape/extensions.nix b/pkgs/applications/graphics/inkscape/extensions.nix
index 66a758f9fe51..013d3bec3527 100644
--- a/pkgs/applications/graphics/inkscape/extensions.nix
+++ b/pkgs/applications/graphics/inkscape/extensions.nix
@@ -1,5 +1,7 @@
 { stdenv
 , fetchFromGitHub
+, runCommand
+, inkcut
 }:
 
 {
@@ -34,4 +36,8 @@
       platforms = platforms.all;
     };
   };
+  inkcut = (runCommand "inkcut-inkscape-plugin" {} ''
+    mkdir -p $out/share/inkscape/extensions
+    cp ${inkcut}/share/inkscape/extensions/* $out/share/inkscape/extensions
+  '');
 }
diff --git a/pkgs/applications/misc/inkcut/avoid-name-clash-between-inkcut-and-extension.patch b/pkgs/applications/misc/inkcut/avoid-name-clash-between-inkcut-and-extension.patch
new file mode 100644
index 000000000000..34e4e6f0e7fb
--- /dev/null
+++ b/pkgs/applications/misc/inkcut/avoid-name-clash-between-inkcut-and-extension.patch
@@ -0,0 +1,85 @@
+From ddc1f9e63e7a769c71131b56f6a2a011c649635c Mon Sep 17 00:00:00 2001
+From: Arnout Engelen <arnout@bzzt.net>
+Date: Tue, 24 Nov 2020 15:34:40 +0100
+Subject: [PATCH] Avoid name clash between inkscape plugin and inkcut itself
+
+Ohterwise, with an unfortunate PYTONPATH, inkcut would no longer
+start since it'd try to invoke the inkcut.py from the extension
+instead of the main application
+---
+ plugins/inkscape/{inkcut.py => inkcut4inkscape.py} | 2 +-
+ plugins/inkscape/inkcut_cut.inx                    | 2 +-
+ plugins/inkscape/inkcut_cut.py                     | 2 +-
+ plugins/inkscape/inkcut_open.inx                   | 2 +-
+ plugins/inkscape/inkcut_open.py                    | 2 +-
+ 5 files changed, 5 insertions(+), 5 deletions(-)
+ rename plugins/inkscape/{inkcut.py => inkcut4inkscape.py} (98%)
+
+diff --git a/plugins/inkscape/inkcut.py b/plugins/inkscape/inkcut4inkscape.py
+similarity index 98%
+rename from plugins/inkscape/inkcut.py
+rename to plugins/inkscape/inkcut4inkscape.py
+index 5b90475..7dc8d86 100644
+--- a/plugins/inkscape/inkcut.py
++++ b/plugins/inkscape/inkcut4inkscape.py
+@@ -2,7 +2,7 @@
+ # -*- coding: utf-8 -*-
+ """
+ Inkcut, Plot HPGL directly from Inkscape.
+-   inkcut.py
++   inkcut4inkscape.py
+ 
+    Copyright 2018 The Inkcut Team
+ 
+diff --git a/plugins/inkscape/inkcut_cut.inx b/plugins/inkscape/inkcut_cut.inx
+index 4b44ae5..3db8721 100644
+--- a/plugins/inkscape/inkcut_cut.inx
++++ b/plugins/inkscape/inkcut_cut.inx
+@@ -2,7 +2,7 @@
+   <_name>Cut selection...</_name>
+   <id>org.ekips.filter.inkcut.cut</id>
+   <dependency type="executable" location="extensions">inkcut_cut.py</dependency>
+-  <dependency type="executable" location="extensions">inkcut.py</dependency>
++  <dependency type="executable" location="extensions">inkcut4inkscape.py</dependency>
+   <dependency type="executable" location="extensions">inkex.py</dependency>  
+   <effect>
+     <object-type>all</object-type>
+diff --git a/plugins/inkscape/inkcut_cut.py b/plugins/inkscape/inkcut_cut.py
+index acaf812..777629a 100644
+--- a/plugins/inkscape/inkcut_cut.py
++++ b/plugins/inkscape/inkcut_cut.py
+@@ -37,7 +37,7 @@
+ else:
+     inkex.localize()
+ import subprocess
+-from inkcut import contains_text, convert_objects_to_paths
++from inkcut4inkscape import contains_text, convert_objects_to_paths
+ 
+ 
+ 
+diff --git a/plugins/inkscape/inkcut_open.inx b/plugins/inkscape/inkcut_open.inx
+index 45ee585..2dcd38e 100644
+--- a/plugins/inkscape/inkcut_open.inx
++++ b/plugins/inkscape/inkcut_open.inx
+@@ -2,7 +2,7 @@
+   <_name>Open current document...</_name>
+   <id>org.ekips.filter.inkcut.open</id>
+   <dependency type="executable" location="extensions">inkcut_open.py</dependency>
+-  <dependency type="executable" location="extensions">inkcut.py</dependency>
++  <dependency type="executable" location="extensions">inkcut4inkscape.py</dependency>
+   <dependency type="executable" location="extensions">inkex.py</dependency>  
+   <effect>
+     <object-type>all</object-type>
+diff --git a/plugins/inkscape/inkcut_open.py b/plugins/inkscape/inkcut_open.py
+index b4652eb..e4c2d62 100644
+--- a/plugins/inkscape/inkcut_open.py
++++ b/plugins/inkscape/inkcut_open.py
+@@ -38,7 +38,7 @@
+     inkex.localize()
+ import subprocess
+ 
+-from inkcut import convert_objects_to_paths
++from inkcut4inkscape import convert_objects_to_paths
+ 
+ DEBUG = False
+ try:
diff --git a/pkgs/applications/misc/inkcut/default.nix b/pkgs/applications/misc/inkcut/default.nix
index cfb10cfbe2f0..481069feac07 100644
--- a/pkgs/applications/misc/inkcut/default.nix
+++ b/pkgs/applications/misc/inkcut/default.nix
@@ -17,6 +17,12 @@ buildPythonApplication rec {
     sha256 = "1zn5i69f3kimcwdd2qkqd3hd1hq76a6i5wxxfb91ih2hj04vdbmx";
   };
 
+  patches = [
+    # https://github.com/inkcut/inkcut/pull/292 but downloaded
+    # because of https://github.com/NixOS/nixpkgs/issues/32084
+    ./avoid-name-clash-between-inkcut-and-extension.patch
+  ];
+
   nativeBuildInputs = [ wrapQtAppsHook ];
 
   propagatedBuildInputs = [
@@ -49,6 +55,15 @@ buildPythonApplication rec {
   dontWrapQtApps = true;
   makeWrapperArgs = [ "\${qtWrapperArgs[@]}" ];
 
+  postInstall = ''
+    mkdir -p $out/share/inkscape/extensions
+
+    cp plugins/inkscape/* $out/share/inkscape/extensions
+
+    sed -i "s|cmd = \['inkcut'\]|cmd = \['$out/bin/inkcut'\]|" $out/share/inkscape/extensions/inkcut_cut.py
+    sed -i "s|cmd = \['inkcut'\]|cmd = \['$out/bin/inkcut'\]|" $out/share/inkscape/extensions/inkcut_open.py
+  '';
+
   meta = with lib; {
     homepage = "https://www.codelv.com/projects/inkcut/";
     description = "Control 2D plotters, cutters, engravers, and CNC machines";