dholth’s gists

dholth / build.py

Created July 29, 2024 21:11

Build .conda packages with conda-package-streaming

	@contextmanager
	def builder(
	destination, file_id, is_info=lambda filename: filename.startswith("info/")
	):
	"""
	Yield TarFile object for adding files, then transmute to "{destination}/{file_id}.conda"
	"""
	# Stream through a pipe instead of collecting all data in a temporary
	# tarfile. Underlying transmute_stream collects data into separate pkg, info
	# tar to be able to send complete size to zstd, so this strategy avoids one

dholth / repodata.jlap.txt

Created October 25, 2023 12:21

Patch operations, path for https://conda.anaconda.org/conda-forge/linux-64/repodata.jlap

This file has been truncated, but you can view the full file.

	[('add', '/packages.conda/pymeep-1.27.0-nompi_py39h1234567_102.conda'),
	('add', '/packages.conda/pymeep-extras-1.27.0-nompi_py38h82cca05_102.conda'),
	('add', '/packages.conda/pymeep-extras-1.27.0-nompi_py39h82cca05_102.conda'),
	('add', '/packages.conda/terraform-provider-rancher2-2.0.0-h520bb56_0.conda'),
	('add', '/packages.conda/pymeep-1.27.0-nompi_py38h1234567_102.conda'),
	('add',
	'/packages.conda/pymeep-extras-1.27.0-mpi_mpich_py311h23d43cc_2.conda'),
	('add', '/packages.conda/pymeep-1.27.0-mpi_mpich_py310h1234567_2.conda'),
	('add', '/packages.conda/pymeep-extras-1.27.0-nompi_py311h82cca05_102.conda'),

dholth / output.txt

Last active December 13, 2022 14:44

zstandard compression versus expected size, streaming API

dholth / unzstd_libarchive.c

Created April 29, 2022 12:42

extract .zst-compressed plain text with libarchive

dholth / SConstruct

Created April 19, 2022 15:08

sample enscons pyproject.toml, SConstruct

	# Starter SConstruct for enscons
	# (filled by enscons.setup2toml)

	import enscons
	import pytoml as toml

	metadata = dict(toml.load(open("pyproject.toml")))["tool"]["enscons"]

	full_tag = "py3-none-any"

dholth / digestreader.rs

Created April 4, 2022 14:18

compute digest as a side effect of reading file

	// read and digest at the same time
	pub struct DigestReader<R> {
	pub digest: Blake2b<consts::U32>,
	reader: R,
	}

	impl<R: Read> DigestReader<R> {
	/// Construct a `DigestReader` reader from an existing reader
	pub fn new(r: R) -> DigestReader<R> {
	DigestReader {

dholth / client_hello.py

Created August 6, 2019 20:05

TLS ClientHello parser

	#!/usr/bin/env python
	# Extremely Principled TLS v1.2 ClientHello parser for ALPN extensions

	import struct
	import binascii


	_int16 = struct.Struct(">H")

dholth / wgc.py

Last active April 6, 2020 16:18

	#!/usr/bin/env python
	# wgc "wheel greater compression"
	# puts everything but *.dist-info/ in an interior archive

	import pathlib
	import os.path
	import sys
	import hashlib
	import zipfile
	import base64

dholth / controller.py

Created April 7, 2019 00:59

add gamecontroller to kivy?

	"""
	Game controller input for Kivy.

	Open game controllers as they become available, expose with full SDL2 API.
	"""

	# special version of sdl (pysdl2-cffi) that doesn't explictly link to a particular version
	import sdl

	JOYSTICK_EVENTS = (

dholth / cred.py

Created September 29, 2016 15:17

twisted cred for jwt

	@implementer(IIDToken)
	class IDTokenCredentials(object):
	def __init__(self, id_token):
	self.id_token = id_token
	self.payload = None

	@implementer(ICredentialsChecker)
	class IDTokenChecker(object):
	credentialInterfaces = (IIDToken,)

Daniel Holth dholth