Eason0210

(let ((orig (default-value 'repeat-echo-function))
	rcol ccol in-repeat)
    (setq
     repeat-echo-function
     (lambda (map)
       (if orig (funcall orig map))
       (unless rcol (setq rcol (face-foreground 'error)))
       (if map
	   (unless in-repeat		; new repeat sequence
	     (setq in-repeat t

Eason0210

Write-Host "Enter connection details:"

$server = "localhost"
$server_maybe = (Read-Host -Prompt "Server [$server]")
If($server_maybe -ne "") {
	$server = $server_maybe
}

$db = "postgres"

Eason0210

git archive --format=tar.gz -o /tmp/my-repo.tar.gz --prefix=my-repo/ master

Eason0210

Nix on macOS Catalina

I'm writing this gist for my own records but it might help someone else too.

Installing Nix

Support for Catalina has improved a lot since the update was first rolled out.

Note: See the NixOS manual for discussion of the --darwin-use-unencrypted-nix-store-volume option.

Eason0210

# Instructions for fresh install

$ sh <(curl -L https://nixos.org/nix/install) --darwin-use-unencrypted-nix-store-volume --daemon
# reboot
$ source /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
$ echo 'export NIX_PATH=darwin-config=$HOME/.nixpkgs/darwin-configuration.nix:$HOME/.nix-defexpr/channels${NIX_PATH:+:}$NIX_PATH' | tee -a ~/.zshrc
$ echo 'source $HOME/.nix-profile/etc/profile.d/hm-session-vars.sh' | tee -a ~/.zshrc
$ nix-channel --add https://nixos.org/channels/nixpkgs-unstable
$ nix-channel --add https://github.com/LnL7/nix-darwin/archive/master.tar.gz darwin
$ nix-channel --add https://github.com/nix-community/home-manager/archive/master.tar.gz home-manager

Eason0210

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; MyEmacsKeymap.ahk
;; - An AutoHotkey script to simulate Emacs keybindings on Windows
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Settings for testing
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; enable warning
;#Warn All, MsgBox

Eason0210

Automatic python version plus venv

Goal

For easy editor integration and command-line usage, we'd like to be able to specify a Python version per project, with its own virtualenv to isolate its libraries from those of other projects.

We're willing to change $PATH globally once, but not per project. And we'd like to avoid having to run every python command invocation in a special subshell created by a shell wrapper. Instead, simply invoking "python" or "pip" etc. should do the right thing, based on the directory in which it is invoked.

It turns out this is possible!