From 9337e7e10a4e17dc2c8c63a430f48b3abb15520d Mon Sep 17 00:00:00 2001
From: Petr Zahradnik <junior@zahradnik.cz>
Date: Sun, 6 Apr 2025 23:16:28 +0200
Subject: [PATCH] ploticus: fix zlib file handle type

---
 .../pl/ploticus/fix-zlib-file-type.patch      | 28 +++++++++++++++++++
 pkgs/by-name/pl/ploticus/package.nix          | 17 +++++++----
 2 files changed, 40 insertions(+), 5 deletions(-)
 create mode 100644 pkgs/by-name/pl/ploticus/fix-zlib-file-type.patch

diff --git a/pkgs/by-name/pl/ploticus/fix-zlib-file-type.patch b/pkgs/by-name/pl/ploticus/fix-zlib-file-type.patch
new file mode 100644
index 000000000000..15a4d3e83c29
--- /dev/null
+++ b/pkgs/by-name/pl/ploticus/fix-zlib-file-type.patch
@@ -0,0 +1,28 @@
+Index: src/svg.c
+===================================================================
+--- a/src/svg.c
++++ b/src/svg.c
+@@ -676,9 +676,9 @@
+ double x1, y1, x2, y2;
+ {
+ char *buf;
+ #ifdef WZ
+-  FILE *outfp;
++  gzFile outfp;
+ #endif
+ 
+ if (svg_style_in_prog) fprintf( svg_fp, "</g>");
+ fprintf( svg_fp, "</g>\n" );   /* close default style */
+@@ -731,10 +731,10 @@
+ 	svg_fp = fopen( svg_tmpfilename, "r" );
+ 	if( svg_fp == NULL ) return( Eerr( 2487, "cannot reopen temp file", svg_tmpfilename ) );
+ #ifdef WZ
+ 	if( svg_compress ) {
+-		if( svg_stdout ) outfp = (FILE *) gzdopen( 1, svg_compressmode );  /* stdout = 1 */
+-		else outfp = (FILE *) gzopen( svg_filename, svg_compressmode );
++		if( svg_stdout ) outfp = gzdopen( 1, svg_compressmode );  /* stdout = 1 */
++		else outfp = gzopen( svg_filename, svg_compressmode );
+ 		if( outfp == NULL ) return( Eerr( 2488, "cannot open output file", svg_filename ) );
+ 		} 
+ #endif
+ 	buf = svg_style; /* reuse */
diff --git a/pkgs/by-name/pl/ploticus/package.nix b/pkgs/by-name/pl/ploticus/package.nix
index 63f2409da4b8..ecb3e6861fa2 100644
--- a/pkgs/by-name/pl/ploticus/package.nix
+++ b/pkgs/by-name/pl/ploticus/package.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation (finalAttrs: {
     url = "mirror://sourceforge/ploticus/ploticus/${finalAttrs.version}/ploticus${
       lib.replaceStrings [ "." ] [ "" ] finalAttrs.version
     }_src.tar.gz";
-    sha256 = "PynkufQFIDqT7+yQDlgW2eG0OBghiB4kHAjKt91m4LA=";
+    hash = "sha256-PynkufQFIDqT7+yQDlgW2eG0OBghiB4kHAjKt91m4LA=";
   };
 
   patches = [
@@ -33,6 +33,11 @@ stdenv.mkDerivation (finalAttrs: {
     # This is required for non-ASCII fonts to work:
     # https://ploticus.sourceforge.net/doc/fonts.html
     ./use-gd-package.patch
+
+    # svg.c:752:26: error: passing argument 1 of 'gzclose' from incompatible pointer type []
+    #  752 |                 gzclose( outfp );
+    # note: expected 'gzFile' {aka 'struct gzFile_s *'} but argument is of type 'FILE *'
+    ./fix-zlib-file-type.patch
   ];
 
   buildInputs = [
@@ -56,6 +61,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   makeFlags = [ "CC:=$(CC)" ];
 
+  enableParallelBuilding = true;
+
   preInstall = ''
     mkdir -p "$out/bin"
   '';
@@ -84,7 +91,7 @@ stdenv.mkDerivation (finalAttrs: {
         '';
   };
 
-  meta = with lib; {
+  meta = {
     description = "Non-interactive software package for producing plots and charts";
     longDescription = ''
       Ploticus is a free, GPL'd, non-interactive
@@ -94,9 +101,9 @@ stdenv.mkDerivation (finalAttrs: {
       statistical capabilities.  It allows significant user control
       over colors, styles, options and details.
     '';
-    license = licenses.gpl2Plus;
-    maintainers = with maintainers; [ pSub ];
+    license = lib.licenses.gpl2Plus;
+    maintainers = with lib.maintainers; [ pSub ];
     homepage = "https://ploticus.sourceforge.net/";
-    platforms = with platforms; linux ++ darwin;
+    platforms = with lib.platforms; linux ++ darwin;
   };
 })