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/electronics/eagle/eagle.nix

@@ -0,0 +1,80 @@
+{ lib, stdenv, mkDerivation, fetchurl, makeDesktopItem
+, libXrender, libXrandr, libXcursor, libX11, libXext, libXi, libxcb
+ , libGL, glib, nss, nspr, expat, alsa-lib
+, qtbase, qtdeclarative, qtsvg, qtlocation, qtwebchannel, qtwebengine
+}:
+
+let
+  libPath = lib.makeLibraryPath
+    [ libXrender libXrandr libXcursor libX11 libXext libXi libxcb
+      libGL glib nss nspr expat alsa-lib
+      qtbase qtdeclarative qtsvg qtlocation qtwebchannel qtwebengine
+    ];
+  in
+  mkDerivation rec {
+    pname = "eagle";
+    version = "9.6.2";
+
+    src = fetchurl {
+      url = "https://eagle-updates.circuits.io/downloads/${builtins.replaceStrings ["."] ["_"] version}/Autodesk_EAGLE_${version}_English_Linux_64bit.tar.gz";
+      sha256 = "18syygnskl286kn8aqfzzdsyzq59d2w19y1h1ynyxsnrvkyv71h0";
+    };
+
+    desktopItem = makeDesktopItem {
+      name = "eagle";
+      exec = "eagle";
+      icon = "eagle";
+      comment = "Schematic capture and PCB layout";
+      desktopName = "Eagle";
+      genericName = "Schematic editor";
+      categories = [ "Development" ];
+    };
+
+    buildInputs =
+      [ libXrender libXrandr libXcursor libX11 libXext libXi libxcb
+        libGL glib nss nspr expat alsa-lib
+        qtbase qtdeclarative qtsvg qtlocation qtwebchannel qtwebengine
+      ];
+
+    installPhase = ''
+      # Extract eagle tarball
+      mkdir "$out"
+      tar -xzf "$src" -C "$out"
+
+      # Install manpage
+      mkdir -p "$out"/share/man/man1
+      ln -s "$out"/eagle-${version}/doc/eagle.1 "$out"/share/man/man1/eagle.1
+
+      patchelf \
+        --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" \
+        --set-rpath "${libPath}:$out/eagle-${version}/lib:${stdenv.cc.cc.lib}/lib" \
+        "$out"/eagle-${version}/eagle
+
+      mkdir -p "$out"/bin
+      ln -s "$out"/eagle-${version}/eagle "$out"/bin/eagle
+
+      # Remove bundled libraries that are available in nixpkgs
+      # TODO: There still may be unused bundled libraries
+      rm "$out"/eagle-${version}/lib/libQt5*.so.5
+      rm "$out"/eagle-${version}/lib/{libxcb-*.so.*,libX*.so.*,libxshmfence.so.1}
+      rm "$out"/eagle-${version}/lib/{libEGL.so.1,libglapi.so.0,libgbm.so.1}
+
+      # No longer needed (we don't use the bundled Qt libraries)
+      rm -r "$out"/eagle-${version}/libexec
+      rm -r "$out"/eagle-${version}/plugins
+
+      # Make desktop item
+      mkdir -p "$out"/share/applications
+      cp "$desktopItem"/share/applications/* "$out"/share/applications/
+      mkdir -p "$out"/share/pixmaps
+      ln -s "$out/eagle-${version}/bin/eagle-logo.png" "$out"/share/pixmaps/eagle.png
+    '';
+
+    meta = with lib; {
+      description = "Schematic editor and PCB layout tool from Autodesk (formerly CadSoft)";
+      homepage = "https://www.autodesk.com/products/eagle/overview";
+      license = licenses.unfree;
+      platforms = [ "x86_64-linux" ];
+      maintainers = [ ];
+    };
+  }

pkgs/applications/science/electronics/eagle/eagle7_fixer.c

@@ -0,0 +1,134 @@
+/*
+ * LD_PRELOAD trick to make Eagle (schematic editor and PCB layout tool from
+ * CadSoft) work from a read-only installation directory.
+ *
+ * When Eagle starts, it looks for the license file in <eagle>/bin/eagle.key
+ * (where <eagle> is the install path). If eagle.key is not found, Eagle checks
+ * for write access to <eagle>/bin/, shows a license dialog to the user and
+ * then attempts to write a license file to <eagle>/bin/.
+ *
+ * This will of course fail when Eagle is installed in the read-only Nix store.
+ * Hence this library that redirects accesses to the those paths in the
+ * following way:
+ *
+ *   <eagle>/bin              => $HOME
+ *   <eagle>/bin/eagle.key    => $HOME/.eagle.key
+ *
+ * Also, if copying an example project to ~/eagle/ (in the Eagle GUI), Eagle
+ * chmod's the destination with read-only permission bits (presumably because
+ * the source is read-only) and fails to complete the copy operation.
+ * Therefore, the mode argument in calls to chmod() is OR'ed with the S_IWUSR
+ * bit (write by owner).
+ *
+ * Usage:
+ *   gcc -shared -fPIC -DEAGLE_PATH="$out/eagle-${version}" eagle_fixer.c -o eagle_fixer.so -ldl
+ *   LD_PRELOAD=$PWD/eagle_fixer.so ./result/bin/eagle
+ *
+ * To see the paths that are modified at runtime, set the environment variable
+ * EAGLE_FIXER_DEBUG to 1.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <dlfcn.h>
+#include <limits.h>
+#include <sys/stat.h>
+
+#ifndef EAGLE_PATH
+#error Missing EAGLE_PATH, path to the eagle-${version} installation directory.
+#endif
+
+typedef FILE *(*fopen_func_t)(const char *path, const char *mode);
+typedef int (*access_func_t)(const char *pathname, int mode);
+typedef int (*chmod_func_t)(const char *path, mode_t mode);
+
+/*
+ * Map <eagle>/bin to $HOME and <eagle>/bin/eagle.key to $HOME/.eagle.key
+ *
+ * Path is truncated if bigger than PATH_MAX. It's not threadsafe, but that's
+ * OK.
+ */
+static const char *redirect(const char *pathname)
+{
+	static char buffer[PATH_MAX];
+	const char *homepath;
+	const char *new_path;
+	static int have_warned;
+
+	homepath = getenv("HOME");
+	if (!homepath) {
+		homepath = "/";
+		if (!have_warned && getenv("EAGLE_FIXER_DEBUG")) {
+			fprintf(stderr, "eagle_fixer: HOME is unset, using \"/\" (root) instead.\n");
+			have_warned = 1;
+		}
+	}
+
+	new_path = pathname;
+	if (strcmp(EAGLE_PATH "/bin", pathname) == 0) {
+		/* redirect to $HOME */
+		new_path = homepath;
+	} else if (strcmp(EAGLE_PATH "/bin/eagle.key", pathname) == 0) {
+		/* redirect to $HOME/.eagle.key */
+		snprintf(buffer, PATH_MAX, "%s/.eagle.key", homepath);
+		buffer[PATH_MAX-1] = '\0';
+		new_path = buffer;
+	}
+
+	return new_path;
+}
+
+FILE *fopen(const char *pathname, const char *mode)
+{
+	FILE *fp;
+	const char *path;
+	fopen_func_t orig_fopen;
+
+	orig_fopen = (fopen_func_t)dlsym(RTLD_NEXT, "fopen");
+	path = redirect(pathname);
+	fp = orig_fopen(path, mode);
+
+	if (path != pathname && getenv("EAGLE_FIXER_DEBUG")) {
+		fprintf(stderr, "eagle_fixer: fopen(\"%s\", \"%s\") => \"%s\": fp=%p\n", pathname, mode, path, fp);
+	}
+
+	return fp;
+}
+
+int access(const char *pathname, int mode)
+{
+	int ret;
+	const char *path;
+	access_func_t orig_access;
+
+	orig_access = (access_func_t)dlsym(RTLD_NEXT, "access");
+	path = redirect(pathname);
+	ret = orig_access(path, mode);
+
+	if (path != pathname && getenv("EAGLE_FIXER_DEBUG")) {
+		fprintf(stderr, "eagle_fixer: access(\"%s\", %d) => \"%s\": ret=%d\n", pathname, mode, path, ret);
+	}
+
+	return ret;
+}
+
+int chmod(const char *pathname, mode_t mode)
+{
+	int ret;
+	mode_t new_mode;
+	chmod_func_t orig_chmod;
+
+	orig_chmod = (chmod_func_t)dlsym(RTLD_NEXT, "chmod");
+	new_mode = mode | S_IWUSR;
+	ret = orig_chmod(pathname, new_mode);
+
+	if (getenv("EAGLE_FIXER_DEBUG")) {
+		fprintf(stderr, "eagle_fixer: chmod(\"%s\", %o) => %o: ret=%d\n", pathname, mode, new_mode, ret);
+	}
+
+	return ret;
+}