150 lines
4.9 KiB
Org Mode
150 lines
4.9 KiB
Org Mode
-*- mode: org; coding: utf-8; -*-
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#+TITLE: What's left to do?
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#+STARTUP: content hidestars
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Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
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Copying and distribution of this file, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved.
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* integrate needed Nix code
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** Remove dependency on OpenSSL
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The ‘openssl’ command-line tool is used in libstore to sign store paths
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to be exported, and to check such signatures. The signing keys are
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usually in /etc/nix/signing-key.{pub,sec}. They are a PKCS#8-encoded
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X.509 SubjectPublicKeyInfo. These can be decoded with the [[http://lists.gnu.org/archive/html/help-gnutls/2012-12/msg00012.html][C API of
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GnuTLS]], but not yet with its Guile bindings. There’s also
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‘gnutls_privkey_sign_data’ to sign, and related functions.
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** Add `guix publish' to publish the store using Guile's web server
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Generate narinfos and nars on the fly, upon HTTP GET requests.
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Ideally, extend .nix-cache-info to include the server's public key, and also
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reply to requests for .narinfo.sig.
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Optionally, use Guile-Avahi to publish the service.
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** MAYBE Add a substituter that uses the GNUnet DHT
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Would be neat if binaries could be pushed to and pulled from the GNUnet
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DHT. Guix users would sign their binaries, and define which binaries
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they trust.
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** Add a remote build hook
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Like scripts/build-remote.pl in Nix.
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* user interface
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** Add a package.el (Emacs) back-end
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Unfortunately package.el is monolithic, so most likely we’d have to
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write a new one based on it, as opposed to actually using it.
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* extend <origin>
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** add OpenPGP signatures:
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(origin
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(method http-fetch)
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(uri "http://.../foo.tgz")
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(signature-uri (string-append uri ".sig"))
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(signer-openpgp-fingerprint "..."))
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** allow <origin> to be a derivation/package or a file
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* extend <package>
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** add a ‘user-environment-hook’
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This should specify builder code to be run when building a user
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environment with ‘guix-package’. For instance, Texinfo’s hook would
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create a new ‘dir’.
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** add ‘patches’ there
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** extend ‘propagated-build-inputs’ with support for multiple outputs
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#+BEGIN_SRC scheme
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(outputs '("out" "include"))
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(propagated-build-inputs
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`(((("i1" ,p1 "o1")
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("i2" ,p2))
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=> "include")
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("i3" ,p3)))
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#+END_SRC
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* synchronize package descriptions with GSRC and/or the [[http://directory.fsf.org][FSD]]
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Meta-data for GNU packages, including descriptions and synopses, can be
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dumped from the FSD:
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http://directory.fsf.org/wiki?title=GNU/Export&action=purge .
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We could periodically synchronize with that.
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* support cross-compilation
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Implement ‘package-cross-derivation’, and add the corresponding code in
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‘gnu-build-system’. Then, actually bootstrap a cross-compilation
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environment–e.g., a cross-GNU environment.
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* add a guildhall build system
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The Guildhall is Guile’s packaging system. It should be easy to add a
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‘guildhall-build-system’ that does the right thing based on guildhall
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recipes.
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* gnu-build-system: produce a ‘debug’ derivation
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Set a .gnu_debuglink in the main derivations to point to the sibling
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file name (only the basename, to not retain a dependency on the ‘debug’
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derivation.)
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For /nix/store/xyz-foobar/bin/foo, we should have
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/nix/store/abc-foobar-debug/lib/nix/store/xyz-foobar/bin/foo.debug (info
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"(gdb) Separate Debug Files").
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Users should have a default GDB setting with ~/.guix-profile/lib/debug
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as their ‘debug-file-directory’.
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* build-expression->derivation: define `%system' in the builder
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Would allow build expressions to have system-dependent code, like
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`glibc-dynamic-linker'.
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* add ‘allowed-references’ in <package>
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[[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]].
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* union
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Support sophisticated collision handling when building a union: check
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whether the colliding files are identical, honor per-package priorities,
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etc.
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* guix package
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** add ‘--list-generations’, and ‘--delete-generations’
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* guix build utils
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** MAYBE Change ‘ld-wrapper’ to add RPATH for libs passed by file name
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** MAYBE Add equivalent to chrpath that uses [[https://gitorious.org/guile-dlhacks/guile-dlhacks/][guile-dlhacks]]
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** MAYBE Add a hash-rewriting thing for deep dependency replacement without rebuild
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See [[https://github.com/NixOS/nixpkgs/commit/d1662d715514e6ef9d3dc29f132f1b3d8e608a18][Shea Levy's `replace-dependency' in Nixpkgs]].
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* distro
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** port to new GNU/Linux platforms, notably ‘mipsel64-linux’
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** port to GNU/Hurd, aka. ‘i686-gnu’
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Problems include that current glibc releases do not build on GNU/Hurd.
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In addition, there haven’t been stable releases of GNU Mach, MiG, and
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Hurd, which would be a pre-condition.
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** make a bootable GNU/Linux-Libre distro, with OS configuration EDSL
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Similar in spirit to /etc/nixos/configuration.nix.
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