uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/science/math/eukleides/default.nix

@@ -0,0 +1,73 @@
+{ lib, stdenv, fetchurl, bison, flex, makeWrapper, texinfo4, getopt, readline, texlive }:
+
+lib.fix (eukleides: stdenv.mkDerivation rec {
+  pname = "eukleides";
+  version = "1.5.4";
+
+  src = fetchurl {
+    url = "http://www.eukleides.org/files/${pname}-${version}.tar.bz2";
+    sha256 = "0s8cyh75hdj89v6kpm3z24i48yzpkr8qf0cwxbs9ijxj1i38ki0q";
+  };
+
+  patches = [
+    # use $CC instead of hardcoded gcc
+    ./use-CC.patch
+    # allow PostScript transparency in epstopdf call
+    ./gs-allowpstransparency.patch
+  ];
+
+  nativeBuildInputs = [ bison flex texinfo4 makeWrapper ];
+
+  buildInputs = [ getopt readline ];
+
+  preConfigure = ''
+    substituteInPlace Makefile \
+      --replace mktexlsr true
+
+    substituteInPlace doc/Makefile \
+      --replace ginstall-info install-info
+
+    substituteInPlace Config \
+      --replace '/usr/local' "$out" \
+      --replace '$(SHARE_DIR)/texmf' "$tex"
+  '';
+
+  # Workaround build failure on -fno-common toolchains like upstream
+  # gcc-10. Otherwise build fails as:
+  #   ld: eukleides_build/triangle.o:(.bss+0x28): multiple definition of `A';
+  #     eukleides_build/quadrilateral.o:(.bss+0x18): first defined here
+  NIX_CFLAGS_COMPILE = "-fcommon";
+
+  preInstall = ''
+    mkdir -p $out/bin
+  '';
+
+  postInstall = ''
+    wrapProgram $out/bin/euktoeps \
+      --prefix PATH : ${lib.makeBinPath [ getopt ]}
+  '';
+
+  outputs = [ "out" "doc" "tex" ];
+
+  passthru.tlType = "run";
+  passthru.pkgs = [ eukleides.tex ]
+    # packages needed by euktoeps, euktopdf and eukleides.sty
+    ++ (with texlive; collection-pstricks.pkgs ++ epstopdf.pkgs ++ iftex.pkgs ++ moreverb.pkgs);
+
+  meta = {
+    description = "Geometry Drawing Language";
+    homepage = "http://www.eukleides.org/";
+    license = lib.licenses.gpl3Plus;
+
+    longDescription = ''
+      Eukleides is a computer language devoted to elementary plane
+      geometry. It aims to be a fairly comprehensive system to create
+      geometric figures, either static or dynamic. Eukleides allows to
+      handle basic types of data: numbers and strings, as well as
+      geometric types of data: points, vectors, sets (of points), lines,
+      circles and conics.
+    '';
+
+    platforms = lib.platforms.unix;
+  };
+})

pkgs/applications/science/math/eukleides/gs-allowpstransparency.patch

@@ -0,0 +1,10 @@
+--- a/bash/euktopdf
++++ b/bash/euktopdf
+@@ -55,6 +55,6 @@ do
+     exit 1
+   fi
+   dvips -q -E -o $base.eps $base.dvi &&
+-  epstopdf $base.eps &&
++  epstopdf --gsopt=-dALLOWPSTRANSPARENCY $base.eps &&
+   rm -f $base.{tex,log,dvi,eps}
+ done

pkgs/applications/science/math/eukleides/use-CC.patch

@@ -0,0 +1,11 @@
+--- a/build/Makefile
++++ b/build/Makefile
+@@ -11,7 +11,7 @@ LEX = flex
+ LFLAGS = -8
+ YACC = bison
+ YFLAGS = -d
+-CC = gcc
++CC ?= gcc
+ IFLAGS = -I$(COMMON_DIR) -I$(MAIN_DIR) -I$(BUILD_DIR) 
+ ifneq ($(strip $(LOCALES)),)
+ MOFLAGS = -DMO_DIR=\"$(MO_DIR)\"