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1 | -*- mode: org; coding: utf-8; -*- |
2 | ||
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3 | #+TITLE: What's left to do? |
4 | #+STARTUP: content hidestars | |
5 | ||
c0b3c89f | 6 | Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org> |
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7 | |
8 | Copying and distribution of this file, with or without modification, | |
9 | are permitted in any medium without royalty provided the copyright | |
10 | notice and this notice are preserved. | |
11 | ||
12 | * integrate needed Nix code | |
13 | ||
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14 | ** Remove dependency on OpenSSL |
15 | ||
16 | The ‘openssl’ command-line tool is used in libstore to sign store paths | |
17 | to be exported, and to check such signatures. The signing keys are | |
18 | usually in /etc/nix/signing-key.{pub,sec}. They are a PKCS#8-encoded | |
19 | X.509 SubjectPublicKeyInfo. These can be decoded with the [[http://lists.gnu.org/archive/html/help-gnutls/2012-12/msg00012.html][C API of | |
20 | GnuTLS]], but not yet with its Guile bindings. There’s also | |
21 | ‘gnutls_privkey_sign_data’ to sign, and related functions. | |
22 | ||
c0b3c89f | 23 | |
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24 | ** Add `guix publish' to publish the store using Guile's web server |
25 | ||
26 | Generate narinfos and nars on the fly, upon HTTP GET requests. | |
27 | Ideally, extend .nix-cache-info to include the server's public key, and also | |
28 | reply to requests for .narinfo.sig. | |
29 | Optionally, use Guile-Avahi to publish the service. | |
c0b3c89f | 30 | |
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31 | ** MAYBE Add a substituter that uses the GNUnet DHT |
32 | ||
33 | Would be neat if binaries could be pushed to and pulled from the GNUnet | |
34 | DHT. Guix users would sign their binaries, and define which binaries | |
35 | they trust. | |
36 | ||
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37 | ** Add a remote build hook |
38 | ||
39 | Like scripts/build-remote.pl in Nix. | |
40 | ||
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41 | * user interface |
42 | ** Add a package.el (Emacs) back-end | |
43 | ||
44 | Unfortunately package.el is monolithic, so most likely we’d have to | |
45 | write a new one based on it, as opposed to actually using it. | |
46 | ||
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47 | * extend <origin> |
48 | ** add OpenPGP signatures: | |
49 | ||
50 | (origin | |
51 | (method http-fetch) | |
52 | (uri "http://.../foo.tgz") | |
53 | (signature-uri (string-append uri ".sig")) | |
54 | (signer-openpgp-fingerprint "...")) | |
55 | ||
56 | ** allow <origin> to be a derivation/package or a file | |
57 | ||
58 | * extend <package> | |
59 | ||
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60 | ** add a ‘user-environment-hook’ |
61 | ||
62 | This should specify builder code to be run when building a user | |
63 | environment with ‘guix-package’. For instance, Texinfo’s hook would | |
64 | create a new ‘dir’. | |
65 | ||
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66 | ** add ‘patches’ there |
67 | ||
68 | ** extend ‘propagated-build-inputs’ with support for multiple outputs | |
69 | ||
70 | #+BEGIN_SRC scheme | |
71 | (outputs '("out" "include")) | |
72 | (propagated-build-inputs | |
73 | `(((("i1" ,p1 "o1") | |
74 | ("i2" ,p2)) | |
75 | => "include") | |
76 | ("i3" ,p3))) | |
77 | #+END_SRC | |
78 | ||
8c247e1c | 79 | * synchronize package descriptions with GSRC and/or the [[http://directory.fsf.org][FSD]] |
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80 | |
81 | Meta-data for GNU packages, including descriptions and synopses, can be | |
82 | dumped from the FSD: | |
83 | http://directory.fsf.org/wiki?title=GNU/Export&action=purge . | |
84 | We could periodically synchronize with that. | |
85 | ||
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86 | * support cross-compilation |
87 | ||
88 | Implement ‘package-cross-derivation’, and add the corresponding code in | |
89 | ‘gnu-build-system’. Then, actually bootstrap a cross-compilation | |
90 | environment–e.g., a cross-GNU environment. | |
91 | ||
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92 | * add a guildhall build system |
93 | ||
94 | The Guildhall is Guile’s packaging system. It should be easy to add a | |
95 | ‘guildhall-build-system’ that does the right thing based on guildhall | |
96 | recipes. | |
97 | ||
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98 | * gnu-build-system: produce a ‘debug’ derivation |
99 | ||
100 | Set a .gnu_debuglink in the main derivations to point to the sibling | |
101 | file name (only the basename, to not retain a dependency on the ‘debug’ | |
102 | derivation.) | |
103 | ||
104 | For /nix/store/xyz-foobar/bin/foo, we should have | |
105 | /nix/store/abc-foobar-debug/lib/nix/store/xyz-foobar/bin/foo.debug (info | |
106 | "(gdb) Separate Debug Files"). | |
107 | ||
108 | Users should have a default GDB setting with ~/.guix-profile/lib/debug | |
109 | as their ‘debug-file-directory’. | |
110 | ||
111 | * build-expression->derivation: define `%system' in the builder | |
112 | ||
113 | Would allow build expressions to have system-dependent code, like | |
114 | `glibc-dynamic-linker'. | |
115 | ||
116 | * add ‘allowed-references’ in <package> | |
117 | ||
118 | [[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]]. | |
119 | ||
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120 | * union |
121 | ||
122 | Support sophisticated collision handling when building a union: check | |
123 | whether the colliding files are identical, honor per-package priorities, | |
124 | etc. | |
125 | ||
d8f257f9 | 126 | * guix package |
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6b8875c8 | 128 | ** add ‘--list-generations’, and ‘--delete-generations’ |
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129 | |
130 | * guix build utils | |
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131 | ** MAYBE Change ‘ld-wrapper’ to add RPATH for libs passed by file name |
132 | ||
8c247e1c | 133 | ** MAYBE Add equivalent to chrpath that uses [[https://gitorious.org/guile-dlhacks/guile-dlhacks/][guile-dlhacks]] |
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29767aae | 135 | ** MAYBE Add a hash-rewriting thing for deep dependency replacement without rebuild |
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136 | |
137 | See [[https://github.com/NixOS/nixpkgs/commit/d1662d715514e6ef9d3dc29f132f1b3d8e608a18][Shea Levy's `replace-dependency' in Nixpkgs]]. | |
138 | ||
6b8875c8 | 139 | * distro |
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140 | ** port to new GNU/Linux platforms, notably ‘mipsel64-linux’ |
141 | ** port to GNU/Hurd, aka. ‘i686-gnu’ | |
142 | ||
143 | Problems include that current glibc releases do not build on GNU/Hurd. | |
144 | In addition, there haven’t been stable releases of GNU Mach, MiG, and | |
145 | Hurd, which would be a pre-condition. | |
146 | ||
147 | ** make a bootable GNU/Linux-Libre distro, with OS configuration EDSL | |
148 | ||
149 | Similar in spirit to /etc/nixos/configuration.nix. |