1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
|
<section xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xi="http://www.w3.org/2001/XInclude"
version="5.0"
xml:id="ssec-relnotes-1.12">
<title>Release 1.12 (TBA)</title>
<para>This release has the following new features:</para>
<itemizedlist>
<listitem>
<para>Start of new <command>nix</command> command line
interface. This is a work in progress and the interface is subject
to change.</para>
<itemizedlist>
<listitem><para>Self-documenting: <option>--help</option> shows
all available command-line arguments.</para></listitem>
<listitem><para><option>--help-config</option> shows all
configuration options.</para></listitem>
<listitem><para><command>nix build</command>: Replacement for
<command>nix-build</command>.</para></listitem>
<listitem><para><command>nix ls-store</command> and <command>nix
ls-nar</command> allow listing the contents of a store path or
NAR file.</para></listitem>
<listitem><para><command>nix cat-store</command> and
<command>nix cat-nar</command> allow extracting a file from a
store path or NAR file.</para></listitem>
<listitem><para><command>nix verify</command> checks whether a
store path is unmodified and/or is trusted.</para></listitem>
<listitem><para><command>nix copy-sigs</command> copies
signatures from one store to another.</para></listitem>
<listitem><para><command>nix sign-paths</command> signs store
paths.</para></listitem>
<listitem><para><command>nix copy</command> copies paths between
arbitrary Nix stores, generalising
<command>nix-copy-closure</command> and
<command>nix-push</command>.</para></listitem>
<listitem><para><command>nix path-info</command> shows
information about store paths.</para></listitem>
<listitem><para><command>nix run</command> starts a shell in
which the specified packages are available. (TODO: currently
broken in chroot mode)</para></listitem>
<listitem><para><command>nix log</command> shows the build log
of a package or path. If the build log is not available locally,
it will try to obtain it from a binary cache.</para></listitem>
<listitem><para><command>nix eval</command> replaces
<command>nix-instantiate --eval</command>.</para></listitem>
<listitem><para><command>nix dump-path</command> to get a NAR
from a store path.</para></listitem>
<listitem><para><command>nix edit</command> opens the source
code of a package in an editor.</para></listitem>
<listitem><para><command>nix search</command> replaces
<command>nix-env -qa</command>. It searches the available
packages for occurences of a search string in the attribute
name, package name or description. It caches available packages
to speed up searches.</para></listitem>
</itemizedlist>
</listitem>
<listitem>
<para>The external program <command>nix-repl</command> has been
integrated into Nix as <command>nix repl</command>.</para>
</listitem>
<listitem>
<para>Nix now supports floating-point numbers.</para>
</listitem>
<listitem>
<para>New build mode <command>nix-build --hash</command> that
builds a derivation, computes the hash of the output, and moves
the output to the store path corresponding to what a fixed-output
derivation with that hash would produce.
(Add docs and examples; see d367b8e7875161e655deaa96bf8a5dd0bcf8229e)</para>
</listitem>
<listitem>
<para>It is no longer necessary to set the
<envar>NIX_REMOTE</envar> environment variable if you need to use
the Nix daemon. Nix will use the daemon automatically if you don’t
have write access to the Nix database.</para>
</listitem>
<listitem>
<para>The Nix language now supports floating point numbers. They are
based on regular C++ <literal>float</literal> and compatible with
existing integers and number-related operations. Export and import to and
from JSON and XML works, too.</para>
</listitem>
<listitem>
<para><command>nix-shell</command> now sets the
<varname>IN_NIX_SHELL</varname> environment variable during
evaluation and in the shell itself. This can be used to perform
different actions depending on whether you’re in a Nix shell or in
a regular build. Nixpkgs provides
<varname>lib.inNixShell</varname> to check this variable during
evaluation. (bb36a1a3cf3fbe6bc9d0afcc5fa0f928bed03170)</para>
</listitem>
<listitem>
<para>Internal: all <classname>Store</classname> classes are now
thread-safe. <classname>RemoteStore</classname> supports multiple
concurrent connections to the daemon. This is primarily useful in
multi-threaded programs such as
<command>hydra-queue-runner</command>.</para>
</listitem>
<listitem>
<para>The dependency on Perl has been removed. As a result, some
(obsolete) programs have been removed: <command>nix-push</command>
(replaced by <command>nix copy</command>),
<command>nix-pull</command> (obsoleted by binary caches),
<command>nix-generate-patches</command>,
<command>bsdiff</command>, <command>bspatch</command>.</para>
</listitem>
<listitem>
<para>Improved store abstraction. Substituters
eliminated. BinaryCacheStore, LocalBinaryCacheStore,
HttpBinaryCacheStore, S3BinaryCacheStore (compile-time
optional), SSHStore. Add docs + examples?
</para>
</listitem>
<listitem>
<para>Nix now stores signatures for local store
paths. Locally-built paths are now signed automatically using the
secret keys specified by the <option>secret-key-files</option>
store option.</para>
<para>In addition, store paths that have been built locally are
marked as “ultimately trusted”, and content-addressable store
paths carry a “content-addressability assertion” that allow them
to be trusted without any signatures.</para>
</listitem>
<listitem>
<para><envar>NIX_PATH</envar> is now lazy, so URIs in the path are
only downloaded if they are needed for evaluation.</para>
</listitem>
<listitem>
<para>You can now use
<uri>channel:<replaceable>channel-name</replaceable></uri> as a
short-hand for
<uri>https://nixos.org/channels/<replaceable>channel-name</replaceable>/nixexprs.tar.xz</uri>. For
example, <literal>nix-build channel:nixos-15.09 -A hello</literal>
will build the GNU Hello package from the
<literal>nixos-15.09</literal> channel.</para>
</listitem>
<listitem>
<para>“Nested” log output was removed. As a result,
<command>nix-log2xml</command> was also removed.</para>
</listitem>
<listitem>
<para>When <option>--no-build-output</option> is given, the last
10 lines of the build log will be shown if a build
fails.</para>
</listitem>
<listitem>
<para><function>builtins.fetchgit</function>.
(38539b943a060d9cdfc24d6e5d997c0885b8aa2f)</para>
</listitem>
<listitem>
<para>Git repositories can now be specified in the Nix search
path,
e.g. <literal>nixpkgs=git://github.com/NixOS/nixpkgs</literal>.
(d8bf0d4859e28ddd23401fbe89f4e528aa09ddb3)</para>
</listitem>
<listitem>
<para>Removed OpenSSL-based signing. (f435f8247553656774dd1b2c88e9de5d59cab203)</para>
</listitem>
<listitem>
<para><literal><nix/fetchurl.nix></literal> now uses the
content-addressable tarball cache at
<uri>http://tarballs.nixos.org/</uri>, just like
<function>fetchurl</function> in
Nixpkgs. (f2682e6e18a76ecbfb8a12c17e3a0ca15c084197)</para>
</listitem>
<listitem>
<para>Chroot Nix stores: allow the “physical” location of the Nix
store (e.g. <filename>/home/alice/nix/store</filename>) to differ
from its “logical” location (typically
<filename>/nix/store</filename>). This allows non-root users to
use Nix while still getting the benefits from prebuilt binaries
from
<uri>cache.nixos.org</uri>. (4494000e04122f24558e1436e66d20d89028b4bd,
3eb621750848e0e6b30e5a79f76afbb096bb6c8a)</para>
</listitem>
<listitem>
<para>On Linux, builds are now executed in a user
namespace with uid 1000 and gid 100.</para>
</listitem>
<listitem>
<para><function>builtins.fetchurl</function> and
<function>builtins.fetchTarball</function> now support
<varname>sha256</varname> and <varname>name</varname>
attributes. Using these functions is now allowed in restricted
mode if a hash is supplied.</para>
</listitem>
<listitem>
<para><literal>HttpBinaryCacheStore</literal> (the replacement of
<command>download-from-binary-cache</command>) now retries
automatically on certain HTTP error codes.</para>
</listitem>
<listitem>
<para>Derivation attributes can now reference the outputs of the
derivation using the <function>placeholder</function> builtin
function. For example, the attribute
<programlisting>
configureFlags = "--prefix=${placeholder "out"} --includedir=${placeholder "dev"}";
</programlisting>
will cause the <envar>configureFlags</envar> environment variable
to contain the actual store paths corresponding to the
<literal>out</literal> and <literal>dev</literal> outputs. TODO:
add docs.</para>
</listitem>
<listitem>
<para>Added builtin function
<varname>builtins.partition</varname>.</para>
</listitem>
<listitem>
<para>Support for HTTP/2. This makes binary cache lookups much
more efficient. (90ad02bf626b885a5dd8967894e2eafc953bdf92)</para>
</listitem>
<listitem>
<para>Caching of failed builds has been
removed. (8cffec84859cec8b610a2a22ab0c4d462a9351ff)</para>
</listitem>
<listitem>
<para>The <option>build-sandbox-paths</option> configuration
option can now specify optional paths by appending a
<literal>?</literal>, e.g. <literal>/dev/nvidiactl?</literal> will
bind-mount <varname>/dev/nvidiactl</varname> only if it
exists.</para>
</listitem>
<listitem>
<para>More support for testing build reproducibility: when
<option>enforce-determinism</option> is set to
<literal>false</literal>, it’s no longer a fatal error build
rounds produce different output
(8bdf83f936adae6f2c907a6d2541e80d4120f051); add a hook to run
diffoscope when build rounds produce different output
(9a313469a4bdea2d1e8df24d16289dc2a172a169w).</para>
</listitem>
<listitem>
<para>Kill builds as soon as stdout/stderr is closed. This fixes a
bug that allowed builds to hang Nix indefinitely (regardless of
timeouts). (21948deed99a3295e4d5666e027a6ca42dc00b40)</para>
</listitem>
<listitem>
<para>Add support for passing structured data to builders. TODO:
document. (6de33a9c675b187437a2e1abbcb290981a89ecb1)</para>
</listitem>
<listitem>
<para><varname>exportReferencesGraph</varname>: Export more
complete info in JSON
format. (c2b0d8749f7e77afc1c4b3e8dd36b7ee9720af4a)</para>
</listitem>
<listitem>
<para>Support for
netrc. (e6e74f987f0fa284d220432d426eb965269a97d6,
302386f775eea309679654e5ea7c972fb6e7b9af)</para>
</listitem>
<listitem>
<para>Support <uri>s3://</uri> URIs in all places where Nix allows
URIs. (9ff9c3f2f80ba4108e9c945bbfda2c64735f987b)</para>
</listitem>
<listitem>
<para>The <option>build-max-jobs</option> option can be set to
<literal>auto</literal> to use the number of CPUs in the
system. (7251d048fa812d2551b7003bc9f13a8f5d4c95a5)</para>
</listitem>
<listitem>
<para>Add support for Brotli compression.
<uri>cache.nixos.org</uri> compresses build logs using
Brotli.</para>
</listitem>
<listitem>
<para>Substitutions from binary caches now require signatures by
default. This was already the case on
NixOS. (ecbc3fedd3d5bdc5a0e1a0a51b29062f2874ac8b)</para>
</listitem>
<listitem>
<para><command>nix-env</command> now ignores packages with bad
derivation names (in particular those starting with a digit or
containing a
dot). (b0cb11722626e906a73f10dd9a0c9eea29faf43a)</para>
</listitem>
<listitem>
<para>Renamed various configuration options. (TODO: in progress)</para>
</listitem>
<listitem>
<para>Remote machines can now be specified on the command
line. TODO:
document. (1a68710d4dff609bbaf61db3e17a2573f0aadf17)</para>
</listitem>
<listitem>
<para>In Linux sandbox builds, we now use
<filename>/build</filename> instead of <filename>/tmp</filename>
as the temporary build directory. This fixes potential security
problems when a build accidentally stores its
<envar>TMPDIR</envar> in some critical place, such as an
RPATH. (eba840c8a13b465ace90172ff76a0db2899ab11b)</para>
</listitem>
<listitem>
<para>In Linux sandbox builds, we now provide a default
<filename>/bin/sh</filename> (namely <filename>ash</filename> from
BusyBox). (a2d92bb20e82a0957067ede60e91fab256948b41)</para>
</listitem>
<listitem>
<para>Make all configuration options available as command line
flags (b8283773bd64d7da6859ed520ee19867742a03ba).</para>
</listitem>
<listitem>
<para>Support base-64
hashes. (c0015e87af70f539f24d2aa2bc224a9d8b84276b)</para>
</listitem>
<listitem>
<para><command>nix-shell</command> now used
<varname>bashInteractive</varname> from Nixpkgs, rather than the
<command>bash</command> command that happens to be in the caller’s
<envar>PATH</envar>. This is especially important on macOS where
the <command>bash</command> provided by the system is seriously
outdated and cannot execute <literal>stdenv</literal>’s setup
script.</para>
</listitem>
<listitem>
<para><function>builtins.split</function>.
(b8867a0239b1930a16f9ef3f7f3e864b01416dff))</para>
</listitem>
<listitem>
<para><filename>nix-mode.el</filename> has been removed from Nix. It is now a separate repository
in <uri>https://github.com/NixOS/nix-mode</uri> and can be installed through the MELPA
package repository.</para>
</listitem>
</itemizedlist>
<para>This release has contributions from TBD.</para>
</section>
|