From 768523dd4327a9ec53ecf7ad7a5a9c0f5464e5c1 Mon Sep 17 00:00:00 2001
From: Jacek Galowicz <jacek@galowicz.de>
Date: Wed, 12 Jan 2022 18:33:44 +0100
Subject: [PATCH] pandoc-drawio-filter: init at 1.0

---
 .../misc/pandoc-drawio-filter/default.nix     | 78 +++++++++++++++++++
 pkgs/top-level/all-packages.nix               |  2 +
 2 files changed, 80 insertions(+)
 create mode 100644 pkgs/tools/misc/pandoc-drawio-filter/default.nix

diff --git a/pkgs/tools/misc/pandoc-drawio-filter/default.nix b/pkgs/tools/misc/pandoc-drawio-filter/default.nix
new file mode 100644
index 00000000000..1279296143c
--- /dev/null
+++ b/pkgs/tools/misc/pandoc-drawio-filter/default.nix
@@ -0,0 +1,78 @@
+{ buildPythonApplication
+, drawio
+, fetchFromGitHub
+, lib
+, pandoc
+, pandocfilters
+, runCommand
+, runtimeShell
+, texlive
+, writeScriptBin
+, xvfb-run
+}:
+
+let
+  version = "1.1";
+
+  src = fetchFromGitHub {
+    owner = "tfc";
+    repo = "pandoc-drawio-filter";
+    rev = version;
+    sha256 = "sha256-2XJSAfxqEmmamWIAM3vZqi0mZjUUugmR3zWw8Imjadk=";
+  };
+
+  wrappedDrawio = writeScriptBin "drawio" ''
+    #!${runtimeShell}
+
+    # Electron really wants a configuration directory to not die with:
+    # "Error: Failed to get 'appData' path"
+    # so we give it some temp dir as XDG_CONFIG_HOME
+    tmpdir=$(mktemp -d)
+
+    function cleanup {
+      rm -rf "$tmpdir"
+    }
+    trap cleanup EXIT
+
+    # Drawio needs to run in a virtual X session, because Electron
+    # refuses to work and dies with an unhelpful error message otherwise:
+    # "The futex facility returned an unexpected error code."
+    XDG_CONFIG_HOME="$tmpdir" ${xvfb-run}/bin/xvfb-run ${drawio}/bin/drawio $@
+  '';
+
+  pandoc-drawio-filter = buildPythonApplication {
+    pname = "pandoc-drawio-filter";
+
+    inherit src version;
+
+    propagatedBuildInputs = [
+      wrappedDrawio
+      pandocfilters
+    ];
+
+    passthru.tests.example-doc =
+      let
+        env = {
+          nativeBuildInputs = [
+            pandoc
+            pandoc-drawio-filter
+            texlive.combined.scheme-tetex
+          ];
+        };
+      in
+      runCommand "$pandoc-drawio-filter-example-doc.pdf" env ''
+        cp -r ${src}/example/* .
+        pandoc -F pandoc-drawio example.md -T pdf -o $out
+      '';
+
+    meta = with lib; {
+      homepage = "https://github.com/tfc/pandoc-drawio-filter";
+      description = "Pandoc filter which converts draw.io diagrams to PDF";
+      license = licenses.mit;
+      maintainers = with maintainers; [ tfc ];
+    };
+  };
+
+in
+
+pandoc-drawio-filter
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e2d9bd8e8ed..99fa6715407 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8094,6 +8094,8 @@ with pkgs;
 
   pandoc-imagine = python3Packages.callPackage ../tools/misc/pandoc-imagine { };
 
+  pandoc-drawio-filter = python3Packages.callPackage ../tools/misc/pandoc-drawio-filter { };
+
   pandoc-plantuml-filter = python3Packages.callPackage ../tools/misc/pandoc-plantuml-filter { };
 
   patray = callPackage ../tools/audio/patray { };