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-*- mode: org; coding: utf-8; -*- |
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Copyright © 2012 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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Guix uses Nix’s daemon (‘nix-worker’, later renamed to ‘nix-daemon’) to |
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actually perform builds, scheduling, substitution of pre-built binaries, |
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and GC-related tasks. The daemon mainly uses ‘libstore’ from Nix. |
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Integrating it in Guix itself will make Guix self-contained, thereby |
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simplifying our users’ lives. |
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* infrastructure |
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** have a Hydra instance build Guix packages |
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[[http://nixos.org/hydra/][Hydra]] is a continuous integration tool based on Nix. It now has |
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[[https://github.com/NixOS/hydra/commit/f27ae1d5663680400cb99cfb898970f34d8d21be][Guile/Guix support]], which allows “build recipes” written in Guile using |
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Guix to be used directly on Hydra. |
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For a start, we may use the instance at hydra.nixos.org, generously |
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provided by TU Delft. However, in the future, we may want to setup our |
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own instance at gnu.org. |
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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 support for ‘search-paths’ |
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This should be passed to the build system, to extend package-specific |
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search path environment variables–like ‘GUILE_LOAD_PATH’, ‘PERL5LIB’, |
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etc. |
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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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* 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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* 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 ‘--roll-back’ |
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** add ‘--list-generations’, and ‘--delete-generations’ |
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** add ‘--upgrade’ |
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** add ‘--list-installed’ and ‘--list-available’ |
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** add ‘--search’ |
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* guix build utils |
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** Add equivalent to "rm -rf" |
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** Add equivalent to Nixpkgs's ‘wrapProgram’ |
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** Add equivalent to chrpath, possibly using [[https://gitorious.org/guile-dlhacks/guile-dlhacks/][guile-dlhacks]] |
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* distro |
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** choose a name! (Jinn?) |
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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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