-*- mode: org; coding: utf-8; -*- #+TITLE: What's left to do? #+STARTUP: content hidestars Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org> Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. * integrate needed Nix code ** MAYBE Add a substituter that uses the GNUnet DHT or [[http://libswift.org][libswift]] Would be neat if binaries could be pushed to and pulled from the GNUnet DHT or rather libswift (since DHTs aren’t suited for large payloads). Guix users would sign their binaries, and define which binaries they trust. Use UPnP and similar to traverse NAT, like ‘filegive’ does. ** Add a remote build hook Like scripts/build-remote.pl in Nix. * Add `guix publish' to publish the store using Guile's web server Generate narinfos and nars on the fly, upon HTTP GET requests. Ideally, extend .nix-cache-info to include the server's public key, and also reply to requests for .narinfo.sig. Optionally, use Guile-Avahi to publish the service. * user interface ** Add a package.el (Emacs) back-end package.el is quite monolithic, but we may be able to reuse/extend ‘package-menu-mode’ or at least ‘tabulated-list-mode’. ** add guile-ncurses interface * extend <package> ** add ‘recommends’ field For instance, glibc, binutils, gcc, and ld-wrapper would recommend each other. ‘guix package -i’ could ask interactively (?), or allow users to follow all or none of the recommendations. ** add a ‘user-environment-hook’ This should specify builder code to be run when building a user environment with ‘guix-package’. For instance, Texinfo’s hook would create a new ‘dir’. ** extend ‘propagated-build-inputs’ with support for multiple outputs #+BEGIN_SRC scheme (outputs '("out" "include")) (propagated-build-inputs `(((("i1" ,p1 "o1") ("i2" ,p2)) => "include") ("i3" ,p3))) #+END_SRC * MAYBE use HOP-like escapes to refer to inputs in build-side code Instead of doing things like: #+BEGIN_SRC scheme (inputs `(("foo" ,foo))) (arguments '(#:configure-flags (list (string-append "--with-foo=" (assoc-ref %build-inputs "foo"))))) #+END_SRC Allow things like: #+BEGIN_SRC scheme (inputs (list foo)) (arguments ~(#:configure-flags (list (string-append "--with-foo=" $foo)))) #+END_SRC ... where '~' is 'build-quote' and '$' is 'build-unquote'. Better yet, automatically compute the list of references of an expression passed to 'derivation-expression'. Use a [[http://dorophone.blogspot.fr/2011/09/scheme-syntax-is-monad.html][monad]] for the syntax. * synchronize non-GNU package descriptions with the [[http://directory.fsf.org][FSD]] Meta-data for GNU packages, including descriptions and synopses, can be dumped from the FSD: http://directory.fsf.org/wiki?title=GNU/Export&action=purge . We could periodically synchronize with that. * add a guildhall build system The Guildhall is Guile’s packaging system. It should be easy to add a ‘guildhall-build-system’ that does the right thing based on guildhall recipes. * add ‘allowed-references’ in <package> [[file:~/src/nix/src/libstore/build.cc::if%20(drv.env.find("allowedReferences")%20!%3D%20drv.env.end())%20{][See how Nix implements that internally]]. * union Support sophisticated collision handling when building a union: check whether the colliding files are identical, honor per-package priorities, etc. * add GUIX_ALLOW_EXPENSIVE_TESTS Tests that need to download stuff or otherwise take a long time would only be run when that is defined. * add "guix challenge" Would download a substitute, and compare its contents against a (hopefully locally-built) copy. * guix build utils ** MAYBE Change ‘ld-wrapper’ to add RPATH for libs passed by file name ** MAYBE Add equivalent to chrpath that uses [[https://gitorious.org/guile-dlhacks/guile-dlhacks/][guile-dlhacks]] ** MAYBE Add a hash-rewriting thing for deep dependency replacement without rebuild See [[https://github.com/NixOS/nixpkgs/commit/d1662d715514e6ef9d3dc29f132f1b3d8e608a18][Shea Levy's `replace-dependency' in Nixpkgs]]. * distro ** port to new GNU/Linux platforms, notably ‘mipsel64-linux’ ** port to GNU/Hurd, aka. ‘i686-gnu’ Problems include that current glibc releases do not build on GNU/Hurd. In addition, there haven’t been stable releases of GNU Mach, MiG, and Hurd, which would be a pre-condition. ** make a bootable GNU/Linux-Libre distro, with OS configuration EDSL Similar in spirit to /etc/nixos/configuration.nix.