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@arianvp
arianvp / SSH_MACOS_SECURE_ENCLAVES.md
Last active December 6, 2025 16:17
Native Secure Enclaved backed ssh keys on MacOS

Native Secure Enclave backed ssh keys on MacOS

It turns out that MacOS Tahoe can generate and use secure-enclave backed SSH keys! This replaces projects like https://github.com/maxgoedjen/secretive

There is a shared library /usr/lib/ssh-keychain.dylib that traditionally has been used to add smartcard support to ssh by implementing PKCS11Provider interface. However since recently it also implements SecurityKeyProivder which supports loading keys directly from the secure enclave! SecurityKeyProvider is what is normally used to talk to FIDO2 devices (e.g. libfido2 can be used to talk to your Yubikey). However you can now use it to talk to your Secure Enclave instead!

@karpathy
karpathy / add_to_zshrc.sh
Created August 25, 2024 20:43
Git Commit Message AI
# -----------------------------------------------------------------------------
# AI-powered Git Commit Function
# Copy paste this gist into your ~/.bashrc or ~/.zshrc to gain the `gcm` command. It:
# 1) gets the current staged changed diff
# 2) sends them to an LLM to write the git commit message
# 3) allows you to easily accept, edit, regenerate, cancel
# But - just read and edit the code however you like
# the `llm` CLI util is awesome, can get it here: https://llm.datasette.io/en/stable/
gcm() {
@stephancasas
stephancasas / NSApplication+NSResponderDebug.swift
Created March 18, 2024 20:35
An extension on NSApplication providing a computed property that describes the current responder chain.
//
// NSApplication+NSResponderDebug.swift
//
// Created by Stephan Casas on 3/18/24.
//
import Cocoa;
extension NSApplication {
@alexwidua
alexwidua / ContentView.swift
Created July 4, 2023 17:07
SwiftUI Grid Animation
import SwiftUI
// 1. Use looped H/VStacks to create a grid
// 2. Conditionally increase spacing to grow/shrink the grid
// 3. Calculate the distance of each dot to the center and use the value to stagger the animation
//4. Add random delay on top of the staggered delay value
struct ContentView: View {
// const & state
@psychemedia
psychemedia / GPT4all-langchain-demo.ipynb
Last active December 21, 2023 17:30
Example of running GPT4all local LLM via langchain in a Jupyter notebook (Python)
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@Sherlouk
Sherlouk / DebugDevice.swift
Last active June 9, 2025 15:02
Debug Profiles - Securely debugging in production
//
// DebugDevice.swift
//
// Copyright 2022 • Sidetrack Tech Limited
//
import Foundation
// This must be called on the main-thread.
var isDebugProfileInstalled: Bool {
@T1T4N
T1T4N / generate-xcode-compilation-database.md
Last active October 22, 2025 07:01
Generate a JSON Compilation Database from an Xcode project

Introduction

A JSON compilation database is a very handy output format which is parsed and used by many development tools. Unfortunately for us Apple Developers, it is not straightforward to generate one from within Xcode, as it is (probably) not Apple's priority and therefore there is no toggle/switch/setting that can be easily enabled to get this information.

There is however a solution, thanks to Apple using Clang/LLVM as their main toolchain.

Implementation

The standard way to generate this with clang would be to use the -MJ flag and give it a file name that typically corresponds to the input file. Using this flag indirectly through Xcode is hard, given that we're not aware of all the other arguments when a compiler call is executed.

However, there is a second hidden/badly documented LLVM flag: -gen-cdb-fragment-path - it is implemented in terms of -MJ and has the same functionality, but it's argument in contrast is an output directory.

@insidegui
insidegui / reloadplugins.sh
Created January 29, 2022 23:00
Make your Mac app's extensions immediately available on macOS with a run script build phase
# Add this to a "Run Script" build phase in your app's main target, as the last step.
# It will use the pluginkit command-line tool to force the plugin system on macOS to add your extensions to its database, making them available.
# I made this specifically for widgets, but it should work for pretty much any extension type (appex bundle).
find $CODESIGNING_FOLDER_PATH -name '*.appex' -exec pluginkit -a {} \;
@sneakers-the-rat
sneakers-the-rat / clean_pdf.sh
Last active October 18, 2025 18:03
Strip PDF Metadata
# --------------------------------------------------------------------
# Recursively find pdfs from the directory given as the first argument,
# otherwise search the current directory.
# Use exiftool and qpdf (both must be installed and locatable on $PATH)
# to strip all top-level metadata from PDFs.
#
# Note - This only removes file-level metadata, not any metadata
# in embedded images, etc.
#
# Code is provided as-is, I take no responsibility for its use,
@steipete
steipete / TouchBarSwiftUIHack.swift
Created April 19, 2021 15:17
Your SwiftUI app crashes in *** Assertion failure in -[NSTouchBarLayout setLeadingWidgetWidth:], NSTouchBarLayout.m:78 ? Use this hack to work around the problem!
import Foundation
import InterposeKit
import OSLog
/// Hack tow work around Assertion failure in -[NSTouchBarLayout setLeadingWidgetWidth:], NSTouchBarLayout.m:78
/// This sometimes happens when macOS restores a window.
/// This even runs if there is no OS-level touch bar.
class MacOSWorkarounds {
static let logger = Logger(category: "MacOSWorkarounds")