| 1 | -*- mode: org; coding: utf-8; -*- |
| 2 | |
| 3 | Copyright © 2012 Ludovic Courtès <ludo@gnu.org> |
| 4 | |
| 5 | Copying and distribution of this file, with or without modification, |
| 6 | are permitted in any medium without royalty provided the copyright |
| 7 | notice and this notice are preserved. |
| 8 | |
| 9 | * integrate needed Nix code |
| 10 | |
| 11 | Guix uses Nix’s daemon (‘nix-worker’, later renamed to ‘nix-daemon’) to |
| 12 | actually perform builds, scheduling, substitution of pre-built binaries, |
| 13 | and GC-related tasks. The daemon mainly uses ‘libstore’ from Nix. |
| 14 | Integrating it in Guix itself will make Guix self-contained, thereby |
| 15 | simplifying our users’ lives. |
| 16 | |
| 17 | * infrastructure |
| 18 | |
| 19 | ** have a Hydra instance build Guix packages |
| 20 | |
| 21 | [[http://nixos.org/hydra/][Hydra]] is a continuous integration tool based on Nix. It now has |
| 22 | [[https://github.com/NixOS/hydra/commit/f27ae1d5663680400cb99cfb898970f34d8d21be][Guile/Guix support]], which allows “build recipes” written in Guile using |
| 23 | Guix to be used directly on Hydra. |
| 24 | |
| 25 | For a start, we may use the instance at hydra.nixos.org, generously |
| 26 | provided by TU Delft. However, in the future, we may want to setup our |
| 27 | own instance at gnu.org. |
| 28 | |
| 29 | * extend <origin> |
| 30 | ** add OpenPGP signatures: |
| 31 | |
| 32 | (origin |
| 33 | (method http-fetch) |
| 34 | (uri "http://.../foo.tgz") |
| 35 | (signature-uri (string-append uri ".sig")) |
| 36 | (signer-openpgp-fingerprint "...")) |
| 37 | |
| 38 | ** allow <origin> to be a derivation/package or a file |
| 39 | |
| 40 | * extend <package> |
| 41 | |
| 42 | ** add support for ‘search-paths’ |
| 43 | |
| 44 | This should be passed to the build system, to extend package-specific |
| 45 | search path environment variables–like ‘GUILE_LOAD_PATH’, ‘PERL5LIB’, |
| 46 | etc. |
| 47 | |
| 48 | ** add a ‘user-environment-hook’ |
| 49 | |
| 50 | This should specify builder code to be run when building a user |
| 51 | environment with ‘guix-package’. For instance, Texinfo’s hook would |
| 52 | create a new ‘dir’. |
| 53 | |
| 54 | * support cross-compilation |
| 55 | |
| 56 | Implement ‘package-cross-derivation’, and add the corresponding code in |
| 57 | ‘gnu-build-system’. Then, actually bootstrap a cross-compilation |
| 58 | environment–e.g., a cross-GNU environment. |
| 59 | |
| 60 | * gnu-build-system: produce a ‘debug’ derivation |
| 61 | |
| 62 | Set a .gnu_debuglink in the main derivations to point to the sibling |
| 63 | file name (only the basename, to not retain a dependency on the ‘debug’ |
| 64 | derivation.) |
| 65 | |
| 66 | For /nix/store/xyz-foobar/bin/foo, we should have |
| 67 | /nix/store/abc-foobar-debug/lib/nix/store/xyz-foobar/bin/foo.debug (info |
| 68 | "(gdb) Separate Debug Files"). |
| 69 | |
| 70 | Users should have a default GDB setting with ~/.guix-profile/lib/debug |
| 71 | as their ‘debug-file-directory’. |
| 72 | |
| 73 | * build-expression->derivation: define `%system' in the builder |
| 74 | |
| 75 | Would allow build expressions to have system-dependent code, like |
| 76 | `glibc-dynamic-linker'. |
| 77 | |
| 78 | * add ‘allowed-references’ in <package> |
| 79 | |
| 80 | [[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]]. |
| 81 | |
| 82 | |
| 83 | * union |
| 84 | |
| 85 | Support sophisticated collision handling when building a union: check |
| 86 | whether the colliding files are identical, honor per-package priorities, |
| 87 | etc. |
| 88 | |
| 89 | * guix-package |
| 90 | |
| 91 | ** add ‘--roll-back’ |
| 92 | ** add ‘--list-generations’, and ‘--delete-generations’ |
| 93 | ** add ‘--upgrade’ |
| 94 | ** add ‘--list-installed’ and ‘--list-available’ |
| 95 | ** add ‘--search’ |
| 96 | |
| 97 | * guix build utils |
| 98 | ** Add equivalent to "rm -rf" |
| 99 | ** Add equivalent to Nixpkgs's ‘wrapProgram’ |
| 100 | ** Add equivalent to chrpath, possibly using [[https://gitorious.org/guile-dlhacks/guile-dlhacks/][guile-dlhacks]] |
| 101 | |
| 102 | * distro |
| 103 | ** choose a name! (Jinn?) |
| 104 | ** port to new GNU/Linux platforms, notably ‘mipsel64-linux’ |
| 105 | ** port to GNU/Hurd, aka. ‘i686-gnu’ |
| 106 | |
| 107 | Problems include that current glibc releases do not build on GNU/Hurd. |
| 108 | In addition, there haven’t been stable releases of GNU Mach, MiG, and |
| 109 | Hurd, which would be a pre-condition. |
| 110 | |
| 111 | ** make a bootable GNU/Linux-Libre distro, with OS configuration EDSL |
| 112 | |
| 113 | Similar in spirit to /etc/nixos/configuration.nix. |