LisannaAtHome

I created these small git commands to help make exploring commits and editing them easier.

The first set of commands, git uc (Undo Commit) and git rc (Redo Commit), will undo a commit while saving the commit message and keeping the changes staged, so you can make changes to the commit and re-perform the commit while having the original commit message restored. Example:

$ git uc
...make edits to staged changes...
$ git rc
...update commit message, original one is loaded into editor...

LisannaAtHome

#! /usr/bin/env bash

NIX_STORE=${NIX_STORE:-"/nix/store"};
store_path=$1;

# check if path is actually broken
if nix-store --verify-path $store_path; then exit 0; fi;

# abuse --check flag to get a fresh, non-substituted rebuild of the path
# TODO: GC?

LisannaAtHome

Lisanna's eclectic nix troubleshooting guide for suicidal power users

tar fails with exit code 1

unpacking 'https://example.com/nixexprs.tar.xz'...
tar: Error opening archive: Failed to open '/nix/store/411sszfqfya5ad2wllmqcr15z5d30575-nixexprs.tar.xz'
error: program 'tar' failed with exit code 1

Discussion:

LisannaAtHome

#!/usr/bin/env bash

git log --format=%B -n 1 HEAD > ._GIT_EXTRACT_MSG && git reset --soft HEAD^ && git reset HEAD && git commit --allow-empty -F ._GIT_EXTRACT_MSG && rm ._GIT_EXTRACT_MSG

LisannaAtHome

#!/usr/bin/env bash
nix-env -ir -E "args: (import <nixpkgs> {}).lib.toDerivation $1"

LisannaAtHome

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 

LisannaAtHome

{
fixup = options: name: file: stdenvNoCC.mkDerivation
  ( options //
    { inherit name;
      installPhase =
        ''cp -r ${file} $out
        '';
    }
  );
wrap = { paths ? [], vars ? {}, file ? null, script ? null, name ? "wrap" }:

LisannaAtHome

{ config, pkgs, ... }:
let
  myCustomChannel = import <myCustomChannel>
    { inherit pkgs; };
in {
  imports = [ (import <myCustomChannel/myCustomModule.nix> { inherit myCustomChannel; }) ];
}