wp-cli: use 1 store path instead of 4

pkgs/development/tools/wp-cli/default.nix

@@ -1,42 +1,46 @@
 { stdenv, lib, fetchurl, writeScript, writeText, php }:
 
 let
-  name = "wp-cli-${version}";
   version = "2.0.0";
 
-  src = fetchurl {
-    url    = "https://github.com/wp-cli/wp-cli/releases/download/v${version}/${name}.phar";
-    sha256 = "1s8pv8vdjwiwknpwsxc59l1zxc2np7nrp6bjd0s8jwsrv5fgjzsp";
-  };
-
   completion = fetchurl {
     url    = "https://raw.githubusercontent.com/wp-cli/wp-cli/v${version}/utils/wp-completion.bash";
     sha256 = "15d330x6d3fizrm6ckzmdknqg6wjlx5fr87bmkbd5s6a1ihs0g24";
   };
 
-  bin = writeScript "wp" ''
+in stdenv.mkDerivation rec {
+  name = "wp-cli-${version}";
+  inherit version;
+
+  src = fetchurl {
+    url    = "https://github.com/wp-cli/wp-cli/releases/download/v${version}/${name}.phar";
+    sha256 = "1s8pv8vdjwiwknpwsxc59l1zxc2np7nrp6bjd0s8jwsrv5fgjzsp";
+  };
+
+  buildCommand = ''
+    dir=$out/share/wp-cli
+    mkdir -p $out/bin $dir
+
+    cat <<_EOF > $out/bin/wp
 #!${stdenv.shell}
 
 set -euo pipefail
 
-    exec ${lib.getBin php}/bin/php \
+exec ${lib.getBin php}/bin/php \\
-      -c ${ini} \
+  -c $dir/php.ini \\
-      -f ${src} -- "$@"
+  -f $dir/wp-cli -- "\$@"
-  '';
+_EOF
+    chmod 0755 $out/bin/wp
 
-  ini = writeText "wp-cli.ini" ''
+    cat <<_EOF > $dir/php.ini
 [PHP]
 memory_limit = -1 ; no limit as composer uses a lot of memory
 
 [Phar]
 phar.readonly = Off
-  '';
+_EOF
 
-in stdenv.mkDerivation rec {
+    install -Dm644 ${src}        $dir/wp-cli
-  inherit name version;
-
-  buildCommand = ''
-    install -Dm755 ${bin}        $out/bin/wp
     install -Dm644 ${completion} $out/share/bash-completion/completions/wp
 
     # this is a very basic run test