Add: nix-script repl

This is a combination of 23 commits:

    * Add first draft for nix-shell repl
    * Remove functions which are in nix-utils.sh
    * Minify if-then-exit
    * Remove sudo run... why do I actually have this?
    * Include helpers
    * Add help text
    * Remove old arguments in parsing code
    * Dont print on stderr, do debugging output here
    * Remove explain checker, use dbg() as output function
    * Fix checker
    * Use bash to print
    * Use "exit" or "quit" to exit nix-repl
    * Remove doubled caller code
    * Move: script_for() function to helpers
    * Remove old variables
    * Fix bash call
    * move all_commands() function to nix-utils.sh
    * Formatted and extended all_commands() function
    * Lists executables only.
    * Shorten error message
    * Add helper to check whether a string contains a string
    * Add possibility to execute simple bash commands in repl
    * The more debug output, the better
    * More things, we should really squash this stuff

1 files changed, 0 insertions, 16 deletions

diff --git a/nix-script b/nix-script
index 3860f20..5bdfe15 100755
--- a/nix-script
+++ b/nix-script
@@ -25,15 +25,6 @@ VERBOSE=0
 
 source $(dirname ${BASH_SOURCE[0]})/nix-utils.sh
 
-#
-# Get the name of the script file for the command passed as argument
-#
-# Does not check whether the file exists.
-#
-script_for() {
-    echo "$(dirname ${BASH_SOURCE[0]})/nix-script-${1}.sh"
-}
-
 SHIFT_ARGS=0
 
 #
@@ -56,13 +47,6 @@ shift_n() {
 }
 
 #
-# List all available commands
-#
-all_commands() {
-    find $(dirname ${BASH_SOURCE[0]}) -type f -name "nix-script-*.sh"
-}
-
-#
 # Parse the arguments for this script
 #
 for cmd