Managing the Haskell Dependency Hell with Nix
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Using System Call Interposition to Automatically Create Portable Software Packages
CDE: Using System Call Interposition to Automatically Create Portable Software Packages Philip J. Guo and Dawson Engler Stanford University April 5, 2011 (This technical report is an extended version of our 2011 USENIX ATC paper) Abstract as dependency hell. Or the user might lack permissions to install software packages in the first place, a common It can be painfully difficult to take software that runs on occurrence on corporate machines and compute clusters one person’s machine and get it to run on another ma- that are administered by IT departments. Finally, the chine. Online forums and mailing lists are filled with user (recalling bitter past experiences) may be reluctant discussions of users’ troubles with compiling, installing, to perturb a working environment by upgrading or down- and configuring software and their myriad of dependen- grading library versions just to try out new software. cies. To eliminate this dependency problem, we created As a testament to the ubiquity of software deployment a system called CDE that uses system call interposition to problems, consider the prevalence of online forums and monitor the execution of x86-Linux programs and pack- mailing list discussions dedicated to troubleshooting in- age up the Code, Data, and Environment required to run stallation and configuration issues. For example, almost them on other x86-Linux machines. The main benefits half of the messages sent to the mailing lists of two ma- of CDE are that creating a package is completely auto- ture research tools, the graph-tool mathematical graph matic, and that running programs within a package re- analysis library [10] and the PADS system for processing quires no installation, configuration, or root permissions. -
GNU Guix Cookbook Tutorials and Examples for Using the GNU Guix Functional Package Manager
GNU Guix Cookbook Tutorials and examples for using the GNU Guix Functional Package Manager The GNU Guix Developers Copyright c 2019 Ricardo Wurmus Copyright c 2019 Efraim Flashner Copyright c 2019 Pierre Neidhardt Copyright c 2020 Oleg Pykhalov Copyright c 2020 Matthew Brooks Copyright c 2020 Marcin Karpezo Copyright c 2020 Brice Waegeneire Copyright c 2020 Andr´eBatista Copyright c 2020 Christine Lemmer-Webber Copyright c 2021 Joshua Branson Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled \GNU Free Documentation License". i Table of Contents GNU Guix Cookbook ::::::::::::::::::::::::::::::: 1 1 Scheme tutorials ::::::::::::::::::::::::::::::::: 2 1.1 A Scheme Crash Course :::::::::::::::::::::::::::::::::::::::: 2 2 Packaging :::::::::::::::::::::::::::::::::::::::: 5 2.1 Packaging Tutorial:::::::::::::::::::::::::::::::::::::::::::::: 5 2.1.1 A \Hello World" package :::::::::::::::::::::::::::::::::: 5 2.1.2 Setup:::::::::::::::::::::::::::::::::::::::::::::::::::::: 8 2.1.2.1 Local file ::::::::::::::::::::::::::::::::::::::::::::: 8 2.1.2.2 `GUIX_PACKAGE_PATH' ::::::::::::::::::::::::::::::::: 9 2.1.2.3 Guix channels ::::::::::::::::::::::::::::::::::::::: 10 2.1.2.4 Direct checkout hacking:::::::::::::::::::::::::::::: 10 2.1.3 Extended example :::::::::::::::::::::::::::::::::::::::: -
The Snap Framework: a Web Toolkit for Haskell
The Functional Web The Snap Framework A Web Toolkit for Haskell Gregory Collins • Google Switzerland Doug Beardsley • Karamaan Group askell is an advanced functional pro- the same inputs, always produce the same out- gramming language. The product of more put. This property means that you almost always H than 20 years of research, it enables rapid decompose a Haskell program into smaller con- development of robust, concise, and fast soft- stituent parts that you can test independently. ware. Haskell supports integration with other Haskell’s ecosystem also includes many power- languages and has loads of built-in concurrency, ful testing and code-coverage tools. parallelism primitives, and rich libraries. With Haskell also comes out of the box with a set its state-of-the-art testing tools and an active of easy-to-use primitives for parallel and con- community, Haskell makes it easier to produce current programming and for performance pro- flexible, maintainable, high-quality software. filing and tuning. Applications built with GHC The most popular Haskell implementation is enjoy solid multicore performance and can han- the Glasgow Haskell Compiler (GHC), a high- dle hundreds of thousands of concurrent net- performance optimizing native-code compiler. work connections. We’ve been delighted to find Here, we look at Snap, a Web-development that Haskell really shines for Web programming. framework for Haskell. Snap combines many other Web-development environments’ best fea- What’s Snap? tures: writing Web code in an expressive high- Snap offers programmers a simple, expressive level language, a rapid development cycle, fast Web programming interface at roughly the same performance for native code, and easy deploy- level of abstraction as Java servlets. -
What I Wish I Knew When Learning Haskell
What I Wish I Knew When Learning Haskell Stephen Diehl 2 Version This is the fifth major draft of this document since 2009. All versions of this text are freely available onmywebsite: 1. HTML Version http://dev.stephendiehl.com/hask/index.html 2. PDF Version http://dev.stephendiehl.com/hask/tutorial.pdf 3. EPUB Version http://dev.stephendiehl.com/hask/tutorial.epub 4. Kindle Version http://dev.stephendiehl.com/hask/tutorial.mobi Pull requests are always accepted for fixes and additional content. The only way this document will stayupto date and accurate through the kindness of readers like you and community patches and pull requests on Github. https://github.com/sdiehl/wiwinwlh Publish Date: March 3, 2020 Git Commit: 77482103ff953a8f189a050c4271919846a56612 Author This text is authored by Stephen Diehl. 1. Web: www.stephendiehl.com 2. Twitter: https://twitter.com/smdiehl 3. Github: https://github.com/sdiehl Special thanks to Erik Aker for copyediting assistance. Copyright © 20092020 Stephen Diehl This code included in the text is dedicated to the public domain. You can copy, modify, distribute and perform thecode, even for commercial purposes, all without asking permission. You may distribute this text in its full form freely, but may not reauthor or sublicense this work. Any reproductions of major portions of the text must include attribution. The software is provided ”as is”, without warranty of any kind, express or implied, including But not limitedtothe warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authorsor copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, Arising from, out of or in connection with the software or the use or other dealings in the software. -
Introduction to the Nix Package Manager
Introduction Nix concepts Usage examples Conclusion Introduction to the Nix Package Manager Millian Poquet 2021-05-12 — Datamove (Inria) seminar 1 / 16 Introduction Nix concepts Usage examples Conclusion Why Nix? Control your software environment! Programs/libraries/scripts/configurations + versions Why is it important for us? Use/develop/test/distribute software Manually install many dependencies? No, just type nix-shell Shared env for whole team (tunable) and test machines Bug only on my machine? Means this is hardware or OS related Reproducible research Repeat experiment in exact same environment Introduce or test variation 2 / 16 Introduction Nix concepts Usage examples Conclusion What is Nix? Nix: package manager Download and install packages Shell into well-defined environment (like virtualenv) Transactional (rollback works) Cross-platform: Linux, macOS, Windows (WSL) Nix: programming language Define packages Define environments (set of packages) Functional, DSL NixOS: Linux distribution Declarative system configuration Uses the Nix language Transactional (rollback still works) 3 / 16 Introduction Nix concepts Usage examples Conclusion Nix in numbers Started in 2003 Nix 1: 10k commits, 28k C++ LOC Nixpkgs 2: 285k commits, 55k packages 3 1. https://github.com/NixOS/nix 2. https://github.com/NixOS/nixpkgs 3. https://repology.org/repositories/statistics 4 / 16 Introduction Nix concepts Usage examples Conclusion Presentation summary 2 Nix concepts 3 Usage examples 4 Conclusion 5 / 16 Introduction Nix concepts Usage examples Conclusion Traditional -
State of the Platform Haskell Implementors Workshop - 2012 Stats
Mark Lentczner, Google State of the Platform Haskell Implementors Workshop - 2012 Stats Number of packages — 47 (21 ghc + 26 hp) Lines of Code — 302k (167k ghc + 135k hp) Releases — 9 (May 2009 ~ present) Distributions — 11+ (Mac, Windows, Linuxes) Stats — June ~ August 2012 Downloads — 20,957 (228/day) 68% Windows 21% Mac OS X 8% Source ?? Linux Mentions of "platform" on #haskell — 983 People Build Maintainers Committee Joachim Breitner — Debian Duncan Coutts Mikhail Glushenkov — Windows Iavor Diatchki Mark Lentczner — OS X Isaac Dupree Andres Löh — NixOS Thomas Schilling Gabor Pali — FreeBSD Johan Tibell Jens Petersen — Fedora Adam Wick Release Team And the many contributors on Mark Lentczner — Chief Meanie haskell-platform@ Duncan Coutts libraries@ Don Stewart Content Packages — Haskell Platform 2012.2.0.0 ghc 7.4.1 time 1.4 random 1.0.1.1 array 0.4.0.0 unix 2.5.1.0 regex-base 0.93.2 base 4.5.0.0 Win32 2.2.2.0 regex-compat 0.95.1 bytestring 0.9.2.1 regex-posix 0.95.1 Cabal 1.14.0 stm 2.3 containers 0.4.2.1 syb 0.3.6.1 deepseq 1.3.0.0 cgi 3001.1.7.4 text 0.11.2.0 directory 1.1.0.2 fgl 5.4.2.4 transformers 0.3.0.0 extensible-exceptions GLUT 2.1.2.1 xhtml 3000.2.1 0.1.1.4 haskell-src 1.0.1.5 zlib 0.5.3.3 filepath 1.3.0.0 html 1.0.1.2 haskell2010 1.1.0.1 HTTP 4000.2.3 haskell98 2.0.0.1 HUnit 1.2.4.2 hpc 0.5.1.1 mtl 2.1.1 cabal-install 0.14.0 old-locale 1.0.0.4 network 2.3.0.13 alex 3.0.1 old-time 1.1.0.0 OpenGL 2.2.3.1 happy 1.18.9 pretty 1.1.1.0 parallel 3.2.0.2 process 1.1.0.1 parsec 3.1.2 template-haskell 2.7.0.0 QuickCheck 2.4.2 Standard -
Chapter 7 Package Management
Chapter 7 Package Management CERTIFICATION OBJECTIVES 7.01 The Red Hat Package Manager ✓ Two-Minute Drill 7.02 More RPM Commands Q&A Self Test 7.03 Dependencies and the yum Command 7.04 More Package Management Tools fter installation is complete, systems are secured, filesystems are configured, and other initial setup tasks are completed, you still have work to do. Almost certainly before your system is in the state you desire, you will be required to install or remove packages. To make sure the right updates are installed, you need to know how to get a system working with ARed Hat Subscription Management (RHSM) or the repository associated with a rebuild distribution. To accomplish these tasks, you need to understand how to use the rpm and yum commands in detail. Although these are “just” two commands, they are rich in detail. Entire books have been dedicated to the rpm command, such as the Red Hat RPM Guide by Eric 344 Chapter 7 Package Management Foster-Johnson. For many, that degree of in-depth knowledge of the rpm command is no longer necessary, given the capabilities of the yum command and the additional package management tools provided in RHEL 7. CERTIFICATION OBJECTIVE 7.01 The Red Hat Package Manager One of the major duties of a system administrator is software management. New applications are installed. Services are updated. Kernels are patched. Without the right tools, it can be difficult to figure out what software is on a system, what is the latest update, and what applications depend on other software. -
Notes on Functional Programming with Haskell
Notes on Functional Programming with Haskell H. Conrad Cunningham [email protected] Multiparadigm Software Architecture Group Department of Computer and Information Science University of Mississippi 201 Weir Hall University, Mississippi 38677 USA Fall Semester 2014 Copyright c 1994, 1995, 1997, 2003, 2007, 2010, 2014 by H. Conrad Cunningham Permission to copy and use this document for educational or research purposes of a non-commercial nature is hereby granted provided that this copyright notice is retained on all copies. All other rights are reserved by the author. H. Conrad Cunningham, D.Sc. Professor and Chair Department of Computer and Information Science University of Mississippi 201 Weir Hall University, Mississippi 38677 USA [email protected] PREFACE TO 1995 EDITION I wrote this set of lecture notes for use in the course Functional Programming (CSCI 555) that I teach in the Department of Computer and Information Science at the Uni- versity of Mississippi. The course is open to advanced undergraduates and beginning graduate students. The first version of these notes were written as a part of my preparation for the fall semester 1993 offering of the course. This version reflects some restructuring and revision done for the fall 1994 offering of the course|or after completion of the class. For these classes, I used the following resources: Textbook { Richard Bird and Philip Wadler. Introduction to Functional Program- ming, Prentice Hall International, 1988 [2]. These notes more or less cover the material from chapters 1 through 6 plus selected material from chapters 7 through 9. Software { Gofer interpreter version 2.30 (2.28 in 1993) written by Mark P. -
The Haskell Cabal
The Haskell Cabal A Common Architecture for Building Applications and Tools Isaac Jones Simon Peyton Jones Simon Marlow Malcolm Wallace Ross Patterson The Haskell Library and Tools Infrastructure Project is an effort to provide a framework for developers to more effectively contribute their software to the Haskell community. This document specifies the Common Architecture for Building Applications and Tools(Cabal), which contributes to the goals of the Haskell Library and Tools Infrastructure Project. Specifically, the Cabal describes what a Haskell package is, how these packages interact with the language, and what Haskell implementations must to do to support packages. The Cabal also specifies some infrastructure (code) that makes it easy for tool authors to build and distribute conforming packages. The Cabal is only one contribution to the Library Infrastructure project. In particular, the Cabal says nothing about more global issues such as how authors decide where in the module name space their library should live; how users can find a package they want; how orphan packages find new owners; and so on. The Cabal has been discussed by the implementors of GHC, Nhc98, and Hugs, all of whom are prepared to implement it. The proposal is now open for wider debate. Please contribute by emailing <[email protected]>. 1 The Haskell Cabal 1. The Haskell Package System: goals The Haskell Package System (Cabal) has the following main goal: to specify a standard way in which a Haskell tool can be packaged, so that it is easy for consumers to use it, or re-package it, regardless of the Haskell implementation or installation platform. -
Graphical User Interfaces in Haskell
Graphical User Interfaces in Haskell By Gideon Sireling August 2011 Abstract Graphical user interfaces (GUIs) are critical to user friendliness, and are well supported by imperative, particularly object-oriented, programming languages. This report focuses on the development of GUIs with the purely functional language Haskell. We review prior efforts at supporting such interfaces with functional idioms, and investigate why these are rarely used in practice. We argue that there is no overarching solution, but rather, that each class of graphical application should be supported by a domain-specific abstraction. Finally, we present such an abstraction for data-processing applications; a framework for binding data to graphical interfaces. The framework does not attempt to replace existing graphical toolkits; rather, it adds a new layer of abstraction, with interfaces provided to Gtk2Hs and WxHaskell. Simple examples demonstrate how Haskell can be utilised to accomplish this task as easily as any imperative language. 1 Acknowledgement I would like to thank my supervisor, Mr Andy Symons, for the clear direction which he provided throughout this project. I would also like to thank the good folks who so freely donate their time and expertise to the Haskell Platform, EclipseFP, and all the community projects utilised in this work. Finally, I wish to express my deepest gratitude to my family, who tolerated all the time invested in this project with the utmost grace and patience. 2 Table of Contents Abstract .............................................................................................................................................. -
Haskell Und Debian
Haskell und Debian Joachim Breitner ∗ Karlsruher Institut für Technology [email protected] Abstract gleiche Weise direkt installiert werden: Ein einfaches apt-get install ghc Da die Programmiersprache Haskell immer beliebter wird genügt, und der Haskell-Compiler ist installiert. apt-get upgrade und in immer weiteren Kreisen eingesetzt wird, müssen sich Aktualisierungen laufen problemlos mit apt-get remove nun immer mehr Programmierer auch um die Besonderheiten und nicht benötigte Pakete können mit sau- der Installation von Haskell-Compilern und -Bibliotheken ber und vollständig entfernt werden. Wenn ein zu installie- kümmern. Dies zu vereinfachen und vereinheitlichen ist die rendes Paket ein anderes benötigt, wird dieses automatisch originäre Aufgabe von Distributionen wie Debian. Dieser mit installiert und auch im weiteren Betrieb werden diese Vortrag gibt einen Einblick in die Funktionsweise von Debian, Abhängigkeiten stets geprüft. Kryptographie schützt den An- insbesondere in Bezug auf Haskell-Pakete, erklärt was man wender dabei vor bösartig veränderten Paketen. als Anwender von Debian erwarten kann und was sich Darüber hinaus prüfen die Debian-Entwickler dass die Debian von den Haskell-Bibliotheken wünscht. Programme auch wirklich Freie Software sind. Man kann sich also darauf verlassen, dass man zu jedem Paket in Debian die Categories and Subject Descriptors K.6.3 [Management of Quellen bekommt, diese verändern darf und die Veränderun- Computing and Information Systems]: Software Management— gen auch weitergeben darf. Auch das geht mit einheitlichen Software process Befehlen (apt-get source und dpkg-buildpackage). Keywords linux distribution, package management, Debian Ich erinnere mich noch vage an die Zeit als ich unter Windows Software noch auf irgendwelchen Webseiten direkt heruntergeladen habe und mich durch immer verschiedene 1. -
Haskell Communities and Activities Report
Haskell Communities and Activities Report http://tinyurl.com/haskcar Twenty-Second Edition — May 2012 Janis Voigtländer (ed.) Andreas Abel Iain Alexander Heinrich Apfelmus Emil Axelsson Christiaan Baaij Doug Beardsley Jean-Philippe Bernardy Mario Blažević Gwern Branwen Joachim Breitner Björn Buckwalter Douglas Burke Carlos Camarão Erik de Castro Lopo Roman Cheplyaka Olaf Chitil Duncan Coutts Jason Dagit Nils Anders Danielsson Romain Demeyer James Deng Dominique Devriese Daniel Díaz Atze Dijkstra Facundo Dominguez Adam Drake Andy Georges Patai Gergely Jürgen Giesl Brett G. Giles Andy Gill George Giorgidze Torsten Grust Jurriaan Hage Bastiaan Heeren PÁLI Gábor János Guillaume Hoffmann Csaba Hruska Oleg Kiselyov Michal Konečný Eric Kow Ben Lippmeier Andres Löh Hans-Wolfgang Loidl Rita Loogen Ian Lynagh Christian Maeder José Pedro Magalhães Ketil Malde Antonio Mamani Alp Mestanogullari Simon Michael Arie Middelkoop Dino Morelli JP Moresmau Ben Moseley Takayuki Muranushi Jürgen Nicklisch-Franken Rishiyur Nikhil David M. Peixotto Jens Petersen Simon Peyton Jones Dan Popa David Sabel Uwe Schmidt Martijn Schrage Tom Schrijvers Andrew G. Seniuk Jeremy Shaw Christian Höner zu Siederdissen Michael Snoyman Jan Stolarek Martin Sulzmann Doaitse Swierstra Henning Thielemann Simon Thompson Sergei Trofimovich Marcos Viera Janis Voigtländer David Waern Daniel Wagner Greg Weber Kazu Yamamoto Edward Z. Yang Brent Yorgey Preface This is the 22nd edition of the Haskell Communities and Activities Report. As usual, fresh entries are formatted using a blue background, while updated entries have a header with a blue background. Entries for which I received a liveness ping, but which have seen no essential update for a while, have been replaced with online pointers to previous versions.