Commit | Line | Data |
---|---|---|
6b8875c8 LC |
1 | -*- mode: org; coding: utf-8; -*- |
2 | ||
c0b3c89f | 3 | Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org> |
6b8875c8 LC |
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 | ||
a9128eac LC |
17 | ** Remove dependency on OpenSSL |
18 | ||
19 | The ‘openssl’ command-line tool is used in libstore to sign store paths | |
20 | to be exported, and to check such signatures. The signing keys are | |
21 | usually in /etc/nix/signing-key.{pub,sec}. They are a PKCS#8-encoded | |
22 | X.509 SubjectPublicKeyInfo. These can be decoded with the [[http://lists.gnu.org/archive/html/help-gnutls/2012-12/msg00012.html][C API of | |
23 | GnuTLS]], but not yet with its Guile bindings. There’s also | |
24 | ‘gnutls_privkey_sign_data’ to sign, and related functions. | |
25 | ||
c0b3c89f LC |
26 | ** Add a binary cache substituter |
27 | ||
28 | Like scripts/download-from-binary-cache.pl in Nix, but written in | |
29 | Scheme. Substituters allow pre-built binaries to be downloaded when | |
30 | they are available from a trusted source. | |
31 | ||
c7e4a72a LC |
32 | ** MAYBE Add a substituter that uses the GNUnet DHT |
33 | ||
34 | Would be neat if binaries could be pushed to and pulled from the GNUnet | |
35 | DHT. Guix users would sign their binaries, and define which binaries | |
36 | they trust. | |
37 | ||
c0b3c89f LC |
38 | ** Add a remote build hook |
39 | ||
40 | Like scripts/build-remote.pl in Nix. | |
41 | ||
6b8875c8 LC |
42 | * infrastructure |
43 | ||
44 | ** have a Hydra instance build Guix packages | |
45 | ||
46 | [[http://nixos.org/hydra/][Hydra]] is a continuous integration tool based on Nix. It now has | |
47 | [[https://github.com/NixOS/hydra/commit/f27ae1d5663680400cb99cfb898970f34d8d21be][Guile/Guix support]], which allows “build recipes” written in Guile using | |
48 | Guix to be used directly on Hydra. | |
49 | ||
50 | For a start, we may use the instance at hydra.nixos.org, generously | |
51 | provided by TU Delft. However, in the future, we may want to setup our | |
52 | own instance at gnu.org. | |
53 | ||
5fc5c2f3 LC |
54 | * add guix-pull |
55 | ||
56 | A tool that fetches the latest code from [[http://git.savannah.gnu.org/cgit/guix.git/snapshot/guix-master.tar.gz][cgit]], builds a derivation that | |
57 | unpacks it, copies only .scm files (this excludes guix/config.in) and | |
58 | compiles it, and then links to it from ~/.local/guix/latest . Change | |
59 | guix-build and guix-package to have that directory first in their load | |
60 | path. | |
61 | ||
c7e4a72a LC |
62 | * user interface |
63 | ** Add a package.el (Emacs) back-end | |
64 | ||
65 | Unfortunately package.el is monolithic, so most likely we’d have to | |
66 | write a new one based on it, as opposed to actually using it. | |
67 | ||
6b8875c8 LC |
68 | * extend <origin> |
69 | ** add OpenPGP signatures: | |
70 | ||
71 | (origin | |
72 | (method http-fetch) | |
73 | (uri "http://.../foo.tgz") | |
74 | (signature-uri (string-append uri ".sig")) | |
75 | (signer-openpgp-fingerprint "...")) | |
76 | ||
77 | ** allow <origin> to be a derivation/package or a file | |
78 | ||
79 | * extend <package> | |
80 | ||
81 | ** add support for ‘search-paths’ | |
82 | ||
83 | This should be passed to the build system, to extend package-specific | |
84 | search path environment variables–like ‘GUILE_LOAD_PATH’, ‘PERL5LIB’, | |
85 | etc. | |
86 | ||
87 | ** add a ‘user-environment-hook’ | |
88 | ||
89 | This should specify builder code to be run when building a user | |
90 | environment with ‘guix-package’. For instance, Texinfo’s hook would | |
91 | create a new ‘dir’. | |
92 | ||
3036a01f LC |
93 | ** add ‘patches’ there |
94 | ||
95 | ** extend ‘propagated-build-inputs’ with support for multiple outputs | |
96 | ||
97 | #+BEGIN_SRC scheme | |
98 | (outputs '("out" "include")) | |
99 | (propagated-build-inputs | |
100 | `(((("i1" ,p1 "o1") | |
101 | ("i2" ,p2)) | |
102 | => "include") | |
103 | ("i3" ,p3))) | |
104 | #+END_SRC | |
105 | ||
29767aae LC |
106 | * synchronize package descriptions with the [[http://directory.fsf.org][FSD]] and/or the Womb |
107 | ||
108 | Meta-data for GNU packages, including descriptions and synopses, can be | |
109 | dumped from the FSD: | |
110 | http://directory.fsf.org/wiki?title=GNU/Export&action=purge . | |
111 | We could periodically synchronize with that. | |
112 | ||
113 | The [[./guix/gnu-maintenance.scm][Womb]] also contains synopses for all the GNU packages. | |
114 | ||
6b8875c8 LC |
115 | * support cross-compilation |
116 | ||
117 | Implement ‘package-cross-derivation’, and add the corresponding code in | |
118 | ‘gnu-build-system’. Then, actually bootstrap a cross-compilation | |
119 | environment–e.g., a cross-GNU environment. | |
120 | ||
c7e4a72a LC |
121 | * add a guildhall build system |
122 | ||
123 | The Guildhall is Guile’s packaging system. It should be easy to add a | |
124 | ‘guildhall-build-system’ that does the right thing based on guildhall | |
125 | recipes. | |
126 | ||
6b8875c8 LC |
127 | * gnu-build-system: produce a ‘debug’ derivation |
128 | ||
129 | Set a .gnu_debuglink in the main derivations to point to the sibling | |
130 | file name (only the basename, to not retain a dependency on the ‘debug’ | |
131 | derivation.) | |
132 | ||
133 | For /nix/store/xyz-foobar/bin/foo, we should have | |
134 | /nix/store/abc-foobar-debug/lib/nix/store/xyz-foobar/bin/foo.debug (info | |
135 | "(gdb) Separate Debug Files"). | |
136 | ||
137 | Users should have a default GDB setting with ~/.guix-profile/lib/debug | |
138 | as their ‘debug-file-directory’. | |
139 | ||
140 | * build-expression->derivation: define `%system' in the builder | |
141 | ||
142 | Would allow build expressions to have system-dependent code, like | |
143 | `glibc-dynamic-linker'. | |
144 | ||
145 | * add ‘allowed-references’ in <package> | |
146 | ||
147 | [[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]]. | |
148 | ||
6b8875c8 LC |
149 | * union |
150 | ||
151 | Support sophisticated collision handling when building a union: check | |
152 | whether the colliding files are identical, honor per-package priorities, | |
153 | etc. | |
154 | ||
155 | * guix-package | |
156 | ||
6b8875c8 LC |
157 | ** add ‘--list-generations’, and ‘--delete-generations’ |
158 | ** add ‘--upgrade’ | |
6b8875c8 LC |
159 | ** add ‘--search’ |
160 | ||
161 | * guix build utils | |
162 | ** Add equivalent to "rm -rf" | |
163 | ** Add equivalent to Nixpkgs's ‘wrapProgram’ | |
29767aae LC |
164 | ** Change ‘patch-shebang’ to DTRT for /usr/bin/env |
165 | ||
166 | I.e., replace “#!/usr/bin/env perl” by “#!/nix/store/…/bin/perl”. | |
167 | ||
168 | ** MAYBE Change ‘ld-wrapper’ to add RPATH for libs passed by file name | |
169 | ||
170 | ** MAYBE Add equivalent to chrpath, possibly using [[https://gitorious.org/guile-dlhacks/guile-dlhacks/][guile-dlhacks]] | |
6b8875c8 | 171 | |
29767aae | 172 | ** MAYBE Add a hash-rewriting thing for deep dependency replacement without rebuild |
c7e4a72a LC |
173 | |
174 | See [[https://github.com/NixOS/nixpkgs/commit/d1662d715514e6ef9d3dc29f132f1b3d8e608a18][Shea Levy's `replace-dependency' in Nixpkgs]]. | |
175 | ||
6b8875c8 LC |
176 | * distro |
177 | ** choose a name! (Jinn?) | |
178 | ** port to new GNU/Linux platforms, notably ‘mipsel64-linux’ | |
179 | ** port to GNU/Hurd, aka. ‘i686-gnu’ | |
180 | ||
181 | Problems include that current glibc releases do not build on GNU/Hurd. | |
182 | In addition, there haven’t been stable releases of GNU Mach, MiG, and | |
183 | Hurd, which would be a pre-condition. | |
184 | ||
185 | ** make a bootable GNU/Linux-Libre distro, with OS configuration EDSL | |
186 | ||
187 | Similar in spirit to /etc/nixos/configuration.nix. |