add piston nix pkg for emacs

packages/emacs/27.1.0/build.sh

@@ -1,24 +0,0 @@
-#!/bin/bash
-
-export PATH=$PWD/bin:$PATH
-
-PREFIX=$(realpath $(dirname $0))
-
-mkdir -p build
-
-cd build
-
-# Emacs version 27.1 supports Docker builds
-# Otherwise, older versions will work too, but you will have to disable `/proc/sys/kernel/randomize_va_space` which is less secure
-curl -L "http://ftpmirror.gnu.org/emacs/emacs-27.1.tar.gz" -o emacs.tar.gz
-tar xzf emacs.tar.gz --strip-components=1
-rm emacs.tar.gz
-
-# Building without all that X11 stuff
-./configure --prefix="$PREFIX" --with-x=no --with-x-toolkit=no --with-xpm=no --with-jpeg=no --with-png=no --with-gif=no --with-tiff=no --with-gnutls=no
-make -j$(nproc)
-make install -j$(nproc)
-
-cd ..
-
-rm -rf build

packages/emacs/27.1.0/environment

@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-
-# Put 'export' statements here for environment variables
-export PATH=$PWD/bin:$PATH

packages/emacs/27.1.0/metadata.json

@@ -1,5 +0,0 @@
-{
-    "language": "emacs",
-    "version": "27.1.0",
-    "aliases": ["emacs", "el", "elisp"]
-}

packages/emacs/27.1.0/run

@@ -1,4 +0,0 @@
-#!/bin/bash
-
-# Put instructions to run the runtime
-emacs -Q --script "$@"

packages/emacs/27.1.0/test.el

@@ -1 +0,0 @@
-(princ "OK")