Revert "Merge branch 'nix-run' of git://github.com/rickynils/nixpkgs"

nix-run's functionality is subsumed by nix-shell -p.

This reverts commit 3cc2b243c7, reversing
changes made to 4d5d6aed29.

pkgs/build-support/my-env-run/default.nix

@@ -1,6 +0,0 @@
-{ writeScript, bash, myEnvFun }: args:
-
-let env = myEnvFun args; in writeScript "envrun-${args.name}" ''
-  #!${bash}/bin/bash
-  ${env}/bin/load-env-${args.name}
-''

pkgs/misc/nix-run/default.nix

@@ -1,72 +0,0 @@
-{ stdenv, bash, writeScript }:
-
-let
-
-  nix-run = writeScript "nix-run" ''
-    #!${bash}/bin/bash
-
-    # Runs nix-build and executes the result
-    # All arguments before "--" are given to nix-build,
-    # and all arguments after "--" are given to the
-    # executed command. stdin is redirected to the executed
-    # command.
-
-    out=$(mktemp)
-    rm "$out"
-
-    # parse args into args1 and args2, separated by --
-    # args1 goes to nix-build, args2 goes to the built command
-    args1=("$@")
-    args2=()
-    for i in "''${!args1[@]}"; do
-      if [ "''${args1[$i]}" == "--" ]; then
-        args2=("''${args1[@]:$((i+1))}")
-        args1=("''${args1[@]:0:$((i))}")
-        break
-      fi
-    done
-
-    if nix-build -o "$out" "''${args1[@]}" >/dev/null; then
-      target=$(readlink -m "$out")
-      unlink "$out"
-      if test -f "$target" && test -x "$target"; then
-        exec "$target" "''${args2[@]}" <&0
-      else
-        echo "nix-run: No executable target produced by nix-build"
-        exit 1
-      fi
-    else
-      echo "nix-run: nix-build failed"
-      exit 1
-    fi
-  '';
-
-in stdenv.mkDerivation {
-  name = "nix-run";
-  phases = [ "installPhase" ];
-  installPhase = ''
-    mkdir -p $out/bin
-    ln -s ${nix-run} $out/bin/nix-run
-  '';
-  meta = {
-    description = ''
-      Wrapper around nix-build that automatically executes the binary
-      produced by the provided Nix expression.
-    '';
-    longDescription = ''
-      nix-run invokes nix-build with any options given to it. It then
-      expects one executable file to be produced by nix-build. If this
-      is the case, that file is executed with any options that is given
-      to nix-run after a <literal>--</literal> option separator. If no
-      executable file is produced by nix-build, nix-run will exit with
-      an error. An example invocation of nix-run is <literal>nix-run -A
-      myattr mynix.nix -- -o opt</literal>. nix-run will then build the
-      attribute <literal>myattr</literal> from the Nix expression given
-      in the file <literal>mynix.nix</literal>. If a single executable
-      file is produced, that file is executed with the option
-      <literal>-o opt</literal>.
-    '';
-    maintainers = [ stdenv.lib.maintainers.rickynils ];
-    platforms = stdenv.lib.platforms.linux;
-  };
-}

pkgs/top-level/all-packages.nix

@@ -10554,12 +10554,6 @@ let
     inherit (stdenv) mkDerivation;
   };
 
-  myEnvRun = import ../build-support/my-env-run {
-    inherit writeScript bash myEnvFun;
-  };
-
-  nix-run = callPackage ../misc/nix-run { };
-
   # patoline requires a rather large ocaml compilation environment.
   # this is why it is build as an environment and not just a normal package.
   # remark : the emacs mode is also installed, but you have to adjust your load-path.