Fix Android NDK package, previously ndk-build was not being properly put in $PATH

This commit also brings in the dependencies ndk-build needs and fixes a bug with
permissions

This was commited on behalf of ewemoa

pkgs/development/mobile/androidenv/androidndk.nix

···
-{ stdenv, fetchurl, zlib, ncurses, p7zip
+{ stdenv, fetchurl, zlib, ncurses, p7zip, lib, makeWrapper
+, coreutils, file, findutils, gawk, gnugrep, gnused, jdk, which
+, platformTools
 }:
 
 assert stdenv.isLinux;
···
     }
     else throw "platform ${stdenv.system} not supported!";
 
-  phases = "installPhase";
+  phases = "buildPhase";
 
-  buildInputs = [ p7zip ];
+  buildInputs = [ p7zip makeWrapper ];
 
-  installPhase = ''
+  buildCommand = let
+    bin_path = "$out/bin";
+    pkg_path = "$out/libexec/${name}";
+    sed_script_1 =
+      "'s|^PROGDIR=`dirname $0`" +
+      "|PROGDIR=`dirname $(readlink -f $(which $0))`|'";
+    sed_script_2 =
+      "'s|^MYNDKDIR=`dirname $0`" +
+      "|MYNDKDIR=`dirname $(readlink -f $(which $0))`|'";
+    runtime_paths = (lib.makeSearchPath "bin" [
+      coreutils file findutils
+      gawk gnugrep gnused
+      jdk
+      which
+    ]) + ":${platformTools}/platform-tools";
+  in ''
     set -x
-    mkdir -pv $out
+    mkdir -pv $out/libexec
+    cd $out/libexec
     7z x $src
-    mv */* $out
 
     # so that it doesn't fail because of read-only permissions set
-    patch -p1 -d $out < ${ ./make-standalone-toolchain.patch }
+    cd -
+    patch -p1 \
+        --no-backup-if-mismatch \
+        -d $out/libexec/${name} < ${ ./make-standalone-toolchain.patch }
+    cd ${pkg_path}
 
     find $out \( \
         \( -type f -a -name "*.so*" \) -o \
-        \( -type f -a -perm +0100 \) \
+        \( -type f -a -perm /0100 \) \
         \) -exec patchelf --set-interpreter ${stdenv.gcc.libc}/lib/ld-*so.? \
-        --set-rpath ${zlib}/lib:${ncurses}/lib {} \;
+                          --set-rpath ${zlib}/lib:${ncurses}/lib {} \;
+    # fix ineffective PROGDIR / MYNDKDIR determination
+    for i in ndk-build ndk-gdb ndk-gdb-py
+    do
+        sed -i -e ${sed_script_1} $i
+    done
+    sed -i -e ${sed_script_2} ndk-which
+    # a bash script
+    patchShebangs ndk-which
+    # make some executables available in PATH
+    mkdir -pv ${bin_path}
+    for i in \
+        ndk-build ndk-depends ndk-gdb ndk-gdb-py ndk-gdb.py ndk-stack ndk-which
+    do
+        ln -sf ${pkg_path}/$i ${bin_path}/$i
+    done
+    # wrap
+    for i in ndk-build ndk-gdb ndk-gdb-py ndk-which
+    do
+        wrapProgram "${bin_path}/$i" --prefix PATH : "${runtime_paths}"
+    done
   '';
 }

pkgs/development/mobile/androidenv/build-app.nix

···
     ${if useNDK then ''
         export GNUMAKE=${gnumake}/bin/make
         export NDK_HOST_AWK=${gawk}/bin/gawk
-        ${androidndk}/ndk-build
+        ${androidndk}/bin/ndk-build
       '' else ""}
     ant ${antFlags} ${if release then "release" else "debug"}
   '';

pkgs/development/mobile/androidenv/default.nix

···
   };
 
   androidndk = import ./androidndk.nix {
-    inherit (pkgs) stdenv fetchurl zlib ncurses p7zip;
+    inherit (pkgs) stdenv fetchurl zlib ncurses p7zip lib makeWrapper;
+    inherit (pkgs) coreutils file findutils gawk gnugrep gnused jdk which;
+    inherit platformTools;
   };
   
   buildApp = import ./build-app.nix {