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Merge remote-tracking branch 'origin/master' into lazy-trees

This commit is contained in:
Eelco Dolstra 2022-12-09 17:23:12 +01:00
commit f62018438d
24 changed files with 136 additions and 229 deletions

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@ -1,29 +1,41 @@
with builtins;
with import ./utils.nix;
let
inherit (builtins) attrNames concatStringsSep isAttrs isBool;
inherit (import ./utils.nix) concatStrings squash splitLines;
in
options:
optionsInfo:
let
showOption = name:
let
inherit (optionsInfo.${name}) description documentDefault defaultValue aliases;
result = squash ''
- <span id="conf-${name}">[`${name}`](#conf-${name})</span>
concatStrings (map
(name:
let option = options.${name}; in
" - [`${name}`](#conf-${name})"
+ "<p id=\"conf-${name}\"></p>\n\n"
+ concatStrings (map (s: " ${s}\n") (splitLines option.description)) + "\n\n"
+ (if option.documentDefault
then " **Default:** " + (
if option.defaultValue == "" || option.defaultValue == []
then "*empty*"
else if isBool option.defaultValue
then (if option.defaultValue then "`true`" else "`false`")
else
# n.b. a StringMap value type is specified as a string, but
# this shows the value type. The empty stringmap is "null" in
# JSON, but that converts to "{ }" here.
(if isAttrs option.defaultValue then "`\"\"`"
else "`" + toString option.defaultValue + "`")) + "\n\n"
else " **Default:** *machine-specific*\n")
+ (if option.aliases != []
then " **Deprecated alias:** " + (concatStringsSep ", " (map (s: "`${s}`") option.aliases)) + "\n\n"
else "")
)
(attrNames options))
${indent " " body}
'';
# separate body to cleanly handle indentation
body = ''
${description}
**Default:** ${showDefault documentDefault defaultValue}
${showAliases aliases}
'';
showDefault = documentDefault: defaultValue:
if documentDefault then
# a StringMap value type is specified as a string, but
# this shows the value type. The empty stringmap is `null` in
# JSON, but that converts to `{ }` here.
if defaultValue == "" || defaultValue == [] || isAttrs defaultValue
then "*empty*"
else if isBool defaultValue then
if defaultValue then "`true`" else "`false`"
else "`${toString defaultValue}`"
else "*machine-specific*";
showAliases = aliases:
if aliases == [] then "" else
"**Deprecated alias:** ${(concatStringsSep ", " (map (s: "`${s}`") aliases))}";
indent = prefix: s:
concatStringsSep "\n" (map (x: if x == "" then x else "${prefix}${x}") (splitLines s));
in result;
in concatStrings (map showOption (attrNames optionsInfo))

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@ -29,19 +29,19 @@ nix-eval = $(dummy-env) $(bindir)/nix eval --experimental-features nix-command -
$(d)/%.1: $(d)/src/command-ref/%.md
@printf "Title: %s\n\n" "$$(basename $@ .1)" > $^.tmp
@cat $^ >> $^.tmp
$(trace-gen) lowdown -sT man -M section=1 $^.tmp -o $@
$(trace-gen) lowdown -sT man --nroff-nolinks -M section=1 $^.tmp -o $@
@rm $^.tmp
$(d)/%.8: $(d)/src/command-ref/%.md
@printf "Title: %s\n\n" "$$(basename $@ .8)" > $^.tmp
@cat $^ >> $^.tmp
$(trace-gen) lowdown -sT man -M section=8 $^.tmp -o $@
$(trace-gen) lowdown -sT man --nroff-nolinks -M section=8 $^.tmp -o $@
@rm $^.tmp
$(d)/nix.conf.5: $(d)/src/command-ref/conf-file.md
@printf "Title: %s\n\n" "$$(basename $@ .5)" > $^.tmp
@cat $^ >> $^.tmp
$(trace-gen) lowdown -sT man -M section=5 $^.tmp -o $@
$(trace-gen) lowdown -sT man --nroff-nolinks -M section=5 $^.tmp -o $@
@rm $^.tmp
$(d)/src/SUMMARY.md: $(d)/src/SUMMARY.md.in $(d)/src/command-ref/new-cli

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@ -35,7 +35,6 @@ const redirects = {
"conf-build-max-jobs": "command-ref/conf-file.html#conf-build-max-jobs",
"conf-build-max-log-size": "command-ref/conf-file.html#conf-build-max-log-size",
"conf-build-max-silent-time": "command-ref/conf-file.html#conf-build-max-silent-time",
"conf-build-repeat": "command-ref/conf-file.html#conf-build-repeat",
"conf-build-timeout": "command-ref/conf-file.html#conf-build-timeout",
"conf-build-use-chroot": "command-ref/conf-file.html#conf-build-use-chroot",
"conf-build-use-sandbox": "command-ref/conf-file.html#conf-build-use-sandbox",
@ -47,7 +46,6 @@ const redirects = {
"conf-connect-timeout": "command-ref/conf-file.html#conf-connect-timeout",
"conf-cores": "command-ref/conf-file.html#conf-cores",
"conf-diff-hook": "command-ref/conf-file.html#conf-diff-hook",
"conf-enforce-determinism": "command-ref/conf-file.html#conf-enforce-determinism",
"conf-env-keep-derivations": "command-ref/conf-file.html#conf-env-keep-derivations",
"conf-extra-binary-caches": "command-ref/conf-file.html#conf-extra-binary-caches",
"conf-extra-platforms": "command-ref/conf-file.html#conf-extra-platforms",
@ -74,7 +72,6 @@ const redirects = {
"conf-plugin-files": "command-ref/conf-file.html#conf-plugin-files",
"conf-post-build-hook": "command-ref/conf-file.html#conf-post-build-hook",
"conf-pre-build-hook": "command-ref/conf-file.html#conf-pre-build-hook",
"conf-repeat": "command-ref/conf-file.html#conf-repeat",
"conf-require-sigs": "command-ref/conf-file.html#conf-require-sigs",
"conf-restrict-eval": "command-ref/conf-file.html#conf-restrict-eval",
"conf-run-diff-hook": "command-ref/conf-file.html#conf-run-diff-hook",

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@ -121,37 +121,3 @@ error:
are not valid, so checking is not possible
Run the build without `--check`, and then try with `--check` again.
# Automatic and Optionally Enforced Determinism Verification
Automatically verify every build at build time by executing the build
multiple times.
Setting `repeat` and `enforce-determinism` in your `nix.conf` permits
the automated verification of every build Nix performs.
The following configuration will run each build three times, and will
require the build to be deterministic:
enforce-determinism = true
repeat = 2
Setting `enforce-determinism` to false as in the following
configuration will run the build multiple times, execute the build
hook, but will allow the build to succeed even if it does not build
reproducibly:
enforce-determinism = false
repeat = 1
An example output of this configuration:
```console
$ nix-build ./test.nix -A unstable
this derivation will be built:
/nix/store/ch6llwpr2h8c3jmnf3f2ghkhx59aa97f-unstable.drv
building '/nix/store/ch6llwpr2h8c3jmnf3f2ghkhx59aa97f-unstable.drv' (round 1/2)...
building '/nix/store/ch6llwpr2h8c3jmnf3f2ghkhx59aa97f-unstable.drv' (round 2/2)...
output '/nix/store/6xg356v9gl03hpbbg8gws77n19qanh02-unstable' of '/nix/store/ch6llwpr2h8c3jmnf3f2ghkhx59aa97f-unstable.drv' differs from '/nix/store/6xg356v9gl03hpbbg8gws77n19qanh02-unstable.check' from previous round
/nix/store/6xg356v9gl03hpbbg8gws77n19qanh02-unstable
```

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@ -33,12 +33,17 @@ distribute the public key for verifying the authenticity of the paths.
example-nix-cache-1:1/cKDz3QCCOmwcztD2eV6Coggp6rqc9DGjWv7C0G+rM=
```
Then, add the public key and the cache URL to your `nix.conf`'s
`trusted-public-keys` and `substituters` options:
Then update [`nix.conf`](../command-ref/conf-file.md) on any machine that will access the cache.
Add the cache URL to [`substituters`](../command-ref/conf-file.md#conf-substituters) and the public key to [`trusted-public-keys`](../command-ref/conf-file.md#conf-trusted-public-keys):
substituters = https://cache.nixos.org/ s3://example-nix-cache
trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= example-nix-cache-1:1/cKDz3QCCOmwcztD2eV6Coggp6rqc9DGjWv7C0G+rM=
Machines that build for the cache must sign derivations using the private key.
On those machines, add the path to the key file to the [`secret-key-files`](../command-ref/conf-file.md#conf-secret-key-files) field in their [`nix.conf`](../command-ref/conf-file.md):
secret-key-files = /etc/nix/key.private
We will restart the Nix daemon in a later step.
# Implementing the build hook
@ -52,14 +57,12 @@ set -eu
set -f # disable globbing
export IFS=' '
echo "Signing paths" $OUT_PATHS
nix store sign --key-file /etc/nix/key.private $OUT_PATHS
echo "Uploading paths" $OUT_PATHS
exec nix copy --to 's3://example-nix-cache' $OUT_PATHS
exec nix copy --to "s3://example-nix-cache" $OUT_PATHS
```
> **Note**
>
>
> The `$OUT_PATHS` variable is a space-separated list of Nix store
> paths. In this case, we expect and want the shell to perform word
> splitting to make each output path its own argument to `nix

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@ -53,16 +53,18 @@ All options not listed here are passed to `nix-store
--realise`, except for `--arg` and `--attr` / `-A` which are passed to
`nix-instantiate`.
- [`--no-out-link`]{#opt-no-out-link}\
- <span id="opt-no-out-link">[`--no-out-link`](#opt-no-out-link)<span>
Do not create a symlink to the output path. Note that as a result
the output does not become a root of the garbage collector, and so
might be deleted by `nix-store
--gc`.
might be deleted by `nix-store --gc`.
- <span id="opt-dry-run">[`--dry-run`](#opt-dry-run)</span>
- [`--dry-run`]{#opt-dry-run}\
Show what store paths would be built or downloaded.
- [`--out-link`]{#opt-out-link} / `-o` *outlink*\
- <span id="opt-out-link">[`--out-link`](#opt-out-link)</span> / `-o` *outlink*
Change the name of the symlink to the output path created from
`result` to *outlink*.

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@ -22,7 +22,8 @@ This section lists the options that are common to all operations. These
options are allowed for every subcommand, though they may not always
have an effect.
- [`--add-root`]{#opt-add-root} *path*\
- <span id="opt-add-root">[`--add-root`](#opt-add-root)</span> *path*
Causes the result of a realisation (`--realise` and
`--force-realise`) to be registered as a root of the garbage
collector. *path* will be created as a symlink to the resulting
@ -104,10 +105,6 @@ The following flags are available:
previous build, the new output path is left in
`/nix/store/name.check.`
See also the `build-repeat` configuration option, which repeats a
derivation a number of times and prevents its outputs from being
registered as “valid” in the Nix store unless they are identical.
Special exit codes:
- `100`\

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@ -88,6 +88,29 @@ extension. The installer will also create `/etc/profile.d/nix.sh`.
### Linux
If you are on Linux with systemd:
1. Remove the Nix daemon service:
```console
sudo systemctl stop nix-daemon.service
sudo systemctl disable nix-daemon.socket nix-daemon.service
sudo systemctl daemon-reload
```
1. Remove systemd service files:
```console
sudo rm /etc/systemd/system/nix-daemon.service /etc/systemd/system/nix-daemon.socket
```
1. The installer script uses systemd-tmpfiles to create the socket directory.
You may also want to remove the configuration for that:
```console
sudo rm /etc/tmpfiles.d/nix-daemon.conf
```
Remove files created by Nix:
```console
@ -103,16 +126,6 @@ done
sudo groupdel 30000
```
If you are on Linux with systemd, remove the Nix daemon service:
```console
sudo systemctl stop nix-daemon.socket
sudo systemctl stop nix-daemon.service
sudo systemctl disable nix-daemon.socket
sudo systemctl disable nix-daemon.service
sudo systemctl daemon-reload
```
There may also be references to Nix in
- `/etc/profile`

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@ -1,5 +1,8 @@
# Release X.Y (202?-??-??)
* The `repeat` and `enforce-determinism` options have been removed
since they had been broken under many circumstances for a long time.
* You can now use flake references in the old CLI, e.g.
```