.\" -*- mode: troff; coding: utf-8 -*-
.TH "nix3-develop" "1" ""
.RS
.PP
\fBWarning\fR 
.br
This program is
\fB\fBexperimental\fR\fR
and its interface is subject to change.
.RE
.SH
Name
.LP
\f(CRnix develop\fR - run a bash shell that provides the build environment of a derivation
.SH
Synopsis
.LP
\f(CRnix develop\fR [\fIoption\fR\[u2026]] \fIinstallable\fR
.SH
Examples
.IP "\(bu" 3
Start a shell with the build environment of the default package of
the flake in the current directory:
.LP
.EX
# nix develop
.EE
.IP
Typical commands to run inside this shell are:
.LP
.EX
# configurePhase
# buildPhase
# installPhase
.EE
.IP
Alternatively, you can run whatever build tools your project uses
directly, e.g. for a typical Unix project:
.LP
.EX
# ./configure --prefix=$out
# make
# make install
.EE
.IP "\(bu" 3
Run a particular build phase directly:
.LP
.EX
# nix develop --unpack
# nix develop --configure
# nix develop --build
# nix develop --check
# nix develop --install
# nix develop --installcheck
.EE
.IP "\(bu" 3
Start a shell with the build environment of GNU Hello:
.LP
.EX
# nix develop nixpkgs#hello
.EE
.IP "\(bu" 3
Record a build environment in a profile:
.LP
.EX
# nix develop --profile /tmp/my-build-env nixpkgs#hello
.EE
.IP "\(bu" 3
Use a build environment previously recorded in a profile:
.LP
.EX
# nix develop /tmp/my-build-env
.EE
.IP "\(bu" 3
Replace all occurrences of the store path corresponding to
\f(CRglibc.dev\fR with a writable directory:
.LP
.EX
# nix develop --redirect nixpkgs#glibc.dev \(ti/my-glibc/outputs/dev
.EE
.IP
Note that this is useful if you\(cqre running a \f(CRnix develop\fR shell for
\f(CRnixpkgs#glibc\fR in \f(CR\(ti/my-glibc\fR and want to compile another package
against it.
.IP "\(bu" 3
Run a series of script commands:
.LP
.EX
# nix develop --command bash -c \(dqmkdir build && cmake .. && make\(dq
.EE
.SH
Description
.LP
\f(CRnix develop\fR starts a \f(CRbash\fR shell that provides an interactive build
environment nearly identical to what Nix would use to build
\fB\fIinstallable\fR\fR. Inside this shell, environment variables and shell
functions are set up so that you can interactively and incrementally
build your package.
.PP
Nix determines the build environment by building a modified version of
the derivation \fIinstallable\fR that just records the environment
initialised by \f(CRstdenv\fR and exits. This build environment can be
recorded into a profile using \f(CR--profile\fR.
.PP
The prompt used by the \f(CRbash\fR shell can be customised by setting the
\f(CRbash-prompt\fR, \f(CRbash-prompt-prefix\fR, and \f(CRbash-prompt-suffix\fR settings in
\f(CRnix.conf\fR or in the flake\(cqs \f(CRnixConfig\fR attribute.
.SH
Flake output attributes
.LP
If no flake output attribute is given, \f(CRnix develop\fR tries the following
flake output attributes:
.IP "\(bu" 3
\f(CRdevShells.<system>.default\fR
.IP "\(bu" 3
\f(CRpackages.<system>.default\fR
.LP
If a flake output \fIname\fR is given, \f(CRnix develop\fR tries the following flake
output attributes:
.IP "\(bu" 3
\f(CRdevShells.<system>.<name>\fR
.IP "\(bu" 3
\f(CRpackages.<system>.<name>\fR
.IP "\(bu" 3
\f(CRlegacyPackages.<system>.<name>\fR
.SH
Options
.IP "\(bu" 3
\fB\f(CR--build\fR\fR
.IP
Run the \f(CRbuild\fR phase.
.IP "\(bu" 3
\fB\f(CR--check\fR\fR
.IP
Run the \f(CRcheck\fR phase.
.IP "\(bu" 3
\fB\f(CR--command\fR\fR / \f(CR-c\fR \fIcommand\fR \fIargs\fR
.IP
Instead of starting an interactive shell, start the specified command and arguments.
.IP "\(bu" 3
\fB\f(CR--configure\fR\fR
.IP
Run the \f(CRconfigure\fR phase.
.IP "\(bu" 3
\fB\f(CR--ignore-environment\fR\fR / \f(CR-i\fR
.IP
Clear the entire environment (except those specified with \f(CR--keep\fR).
.IP "\(bu" 3
\fB\f(CR--install\fR\fR
.IP
Run the \f(CRinstall\fR phase.
.IP "\(bu" 3
\fB\f(CR--installcheck\fR\fR
.IP
Run the \f(CRinstallcheck\fR phase.
.IP "\(bu" 3
\fB\f(CR--keep\fR\fR / \f(CR-k\fR \fIname\fR
.IP
Keep the environment variable \fIname\fR.
.IP "\(bu" 3
\fB\f(CR--phase\fR\fR \fIphase-name\fR
.IP
The stdenv phase to run (e.g. \f(CRbuild\fR or \f(CRconfigure\fR).
.IP "\(bu" 3
\fB\f(CR--profile\fR\fR \fIpath\fR
.IP
The profile to operate on.
.IP "\(bu" 3
\fB\f(CR--redirect\fR\fR \fIinstallable\fR \fIoutputs-dir\fR
.IP
Redirect a store path to a mutable location.
.IP "\(bu" 3
\fB\f(CR--unpack\fR\fR
.IP
Run the \f(CRunpack\fR phase.
.IP "\(bu" 3
\fB\f(CR--unset\fR\fR / \f(CR-u\fR \fIname\fR
.IP
Unset the environment variable \fIname\fR.
.LP
\fBCommon evaluation options:\fR
.IP "\(bu" 3
\fB\f(CR--arg\fR\fR \fIname\fR \fIexpr\fR
.IP
Pass the value \fIexpr\fR as the argument \fIname\fR to Nix functions.
.IP "\(bu" 3
\fB\f(CR--argstr\fR\fR \fIname\fR \fIstring\fR
.IP
Pass the string \fIstring\fR as the argument \fIname\fR to Nix functions.
.IP "\(bu" 3
\fB\f(CR--debugger\fR\fR
.IP
Start an interactive environment if evaluation fails.
.IP "\(bu" 3
\fB\f(CR--eval-store\fR\fR \fIstore-url\fR
.IP
The \fBURL of the Nix store\fR
to use for evaluation, i.e. to store derivations (\f(CR.drv\fR files) and inputs referenced by them.
.IP "\(bu" 3
\fB\f(CR--impure\fR\fR
.IP
Allow access to mutable paths and repositories.
.IP "\(bu" 3
\fB\f(CR--include\fR\fR / \f(CR-I\fR \fIpath\fR
.IP
Add \fIpath\fR to the Nix search path. The Nix search path is
initialized from the colon-separated \fB\f(CRNIX_PATH\fR\fR environment
variable, and is used to look up the location of Nix expressions using \fBpaths\fR enclosed in angle
brackets (i.e., \f(CR<nixpkgs>\fR).
.IP
For instance, passing
.LP
.EX
-I /home/eelco/Dev
-I /etc/nixos
.EE
.IP
will cause Nix to look for paths relative to \f(CR/home/eelco/Dev\fR and
\f(CR/etc/nixos\fR, in that order. This is equivalent to setting the
\f(CRNIX_PATH\fR environment variable to
.LP
.EX
/home/eelco/Dev:/etc/nixos
.EE
.IP
It is also possible to match paths against a prefix. For example,
passing
.LP
.EX
-I nixpkgs=/home/eelco/Dev/nixpkgs-branch
-I /etc/nixos
.EE
.IP
will cause Nix to search for \f(CR<nixpkgs/path>\fR in
\f(CR/home/eelco/Dev/nixpkgs-branch/path\fR and \f(CR/etc/nixos/nixpkgs/path\fR.
.IP
If a path in the Nix search path starts with \f(CRhttp://\fR or \f(CRhttps://\fR,
it is interpreted as the URL of a tarball that will be downloaded and
unpacked to a temporary location. The tarball must consist of a single
top-level directory. For example, passing
.LP
.EX
-I nixpkgs=https://github.com/NixOS/nixpkgs/archive/master.tar.gz
.EE
.IP
tells Nix to download and use the current contents of the \f(CRmaster\fR
branch in the \f(CRnixpkgs\fR repository.
.IP
The URLs of the tarballs from the official \f(CRnixos.org\fR channels
(see \fBthe manual page for \f(CRnix-channel\fR\fR) can be
abbreviated as \f(CRchannel:<channel-name>\fR. For instance, the
following two flags are equivalent:
.LP
.EX
-I nixpkgs=channel:nixos-21.05
-I nixpkgs=https://nixos.org/channels/nixos-21.05/nixexprs.tar.xz
.EE
.IP
You can also fetch source trees using \fBflake URLs\fR and add them to the
search path. For instance,
.LP
.EX
-I nixpkgs=flake:nixpkgs
.EE
.IP
specifies that the prefix \f(CRnixpkgs\fR shall refer to the source tree
downloaded from the \f(CRnixpkgs\fR entry in the flake registry. Similarly,
.LP
.EX
-I nixpkgs=flake:github:NixOS/nixpkgs/nixos-22.05
.EE
.IP
makes \f(CR<nixpkgs>\fR refer to a particular branch of the
\f(CRNixOS/nixpkgs\fR repository on GitHub.
.IP "\(bu" 3
\fB\f(CR--override-flake\fR\fR \fIoriginal-ref\fR \fIresolved-ref\fR
.IP
Override the flake registries, redirecting \fIoriginal-ref\fR to \fIresolved-ref\fR.
.LP
\fBCommon flake-related options:\fR
.IP "\(bu" 3
\fB\f(CR--commit-lock-file\fR\fR
.IP
Commit changes to the flake\(cqs lock file.
.IP "\(bu" 3
\fB\f(CR--inputs-from\fR\fR \fIflake-url\fR
.IP
Use the inputs of the specified flake as registry entries.
.IP "\(bu" 3
\fB\f(CR--no-registries\fR\fR
.IP
Don\(cqt allow lookups in the flake registries. This option is deprecated; use \f(CR--no-use-registries\fR.
.IP "\(bu" 3
\fB\f(CR--no-update-lock-file\fR\fR
.IP
Do not allow any updates to the flake\(cqs lock file.
.IP "\(bu" 3
\fB\f(CR--no-write-lock-file\fR\fR
.IP
Do not write the flake\(cqs newly generated lock file.
.IP "\(bu" 3
\fB\f(CR--output-lock-file\fR\fR \fIflake-lock-path\fR
.IP
Write the given lock file instead of \f(CRflake.lock\fR within the top-level flake.
.IP "\(bu" 3
\fB\f(CR--override-input\fR\fR \fIinput-path\fR \fIflake-url\fR
.IP
Override a specific flake input (e.g. \f(CRdwarffs/nixpkgs\fR). This implies \f(CR--no-write-lock-file\fR.
.IP "\(bu" 3
\fB\f(CR--recreate-lock-file\fR\fR
.IP
Recreate the flake\(cqs lock file from scratch.
.IP "\(bu" 3
\fB\f(CR--reference-lock-file\fR\fR \fIflake-lock-path\fR
.IP
Read the given lock file instead of \f(CRflake.lock\fR within the top-level flake.
.IP "\(bu" 3
\fB\f(CR--update-input\fR\fR \fIinput-path\fR
.IP
Update a specific flake input (ignoring its previous entry in the lock file).
.LP
\fBLogging-related options:\fR
.IP "\(bu" 3
\fB\f(CR--debug\fR\fR
.IP
Set the logging verbosity level to \(oqdebug\(cq.
.IP "\(bu" 3
\fB\f(CR--log-format\fR\fR \fIformat\fR
.IP
Set the format of log output; one of \f(CRraw\fR, \f(CRinternal-json\fR, \f(CRbar\fR or \f(CRbar-with-logs\fR.
.IP "\(bu" 3
\fB\f(CR--print-build-logs\fR\fR / \f(CR-L\fR
.IP
Print full build logs on standard error.
.IP "\(bu" 3
\fB\f(CR--quiet\fR\fR
.IP
Decrease the logging verbosity level.
.IP "\(bu" 3
\fB\f(CR--verbose\fR\fR / \f(CR-v\fR
.IP
Increase the logging verbosity level.
.LP
\fBMiscellaneous global options:\fR
.IP "\(bu" 3
\fB\f(CR--help\fR\fR
.IP
Show usage information.
.IP "\(bu" 3
\fB\f(CR--offline\fR\fR
.IP
Disable substituters and consider all previously downloaded files up-to-date.
.IP "\(bu" 3
\fB\f(CR--option\fR\fR \fIname\fR \fIvalue\fR
.IP
Set the Nix configuration setting \fIname\fR to \fIvalue\fR (overriding \f(CRnix.conf\fR).
.IP "\(bu" 3
\fB\f(CR--refresh\fR\fR
.IP
Consider all previously downloaded files out-of-date.
.IP "\(bu" 3
\fB\f(CR--repair\fR\fR
.IP
During evaluation, rewrite missing or corrupted files in the Nix store. During building, rebuild missing or corrupted store paths.
.IP "\(bu" 3
\fB\f(CR--version\fR\fR
.IP
Show version information.
.LP
\fBOptions that change the interpretation of \fBinstallables\fB:\fR
.IP "\(bu" 3
\fB\f(CR--expr\fR\fR \fIexpr\fR
.IP
Interpret \fB\fIinstallables\fR\fR as attribute paths relative to the Nix expression \fIexpr\fR.
.IP "\(bu" 3
\fB\f(CR--file\fR\fR / \f(CR-f\fR \fIfile\fR
.IP
Interpret \fB\fIinstallables\fR\fR as attribute paths relative to the Nix expression stored in \fIfile\fR. If \fIfile\fR is the character -, then a Nix expression will be read from standard input. Implies \f(CR--impure\fR.
.LP
\fBOptions to override configuration settings:\fR
.IP "\(bu" 3
\fB\f(CR--accept-flake-config\fR\fR
.IP
Enable the \f(CRaccept-flake-config\fR setting.
.IP "\(bu" 3
\fB\f(CR--access-tokens\fR\fR \fIvalue\fR
.IP
Set the \f(CRaccess-tokens\fR setting.
.IP "\(bu" 3
\fB\f(CR--allow-dirty\fR\fR
.IP
Enable the \f(CRallow-dirty\fR setting.
.IP "\(bu" 3
\fB\f(CR--allow-import-from-derivation\fR\fR
.IP
Enable the \f(CRallow-import-from-derivation\fR setting.
.IP "\(bu" 3
\fB\f(CR--allow-new-privileges\fR\fR
.IP
Enable the \f(CRallow-new-privileges\fR setting.
.IP "\(bu" 3
\fB\f(CR--allow-symlinked-store\fR\fR
.IP
Enable the \f(CRallow-symlinked-store\fR setting.
.IP "\(bu" 3
\fB\f(CR--allow-unsafe-native-code-during-evaluation\fR\fR
.IP
Enable the \f(CRallow-unsafe-native-code-during-evaluation\fR setting.
.IP "\(bu" 3
\fB\f(CR--allowed-impure-host-deps\fR\fR \fIvalue\fR
.IP
Set the \f(CRallowed-impure-host-deps\fR setting.
.IP "\(bu" 3
\fB\f(CR--allowed-uris\fR\fR \fIvalue\fR
.IP
Set the \f(CRallowed-uris\fR setting.
.IP "\(bu" 3
\fB\f(CR--allowed-users\fR\fR \fIvalue\fR
.IP
Set the \f(CRallowed-users\fR setting.
.IP "\(bu" 3
\fB\f(CR--auto-allocate-uids\fR\fR
.IP
Enable the \f(CRauto-allocate-uids\fR setting.
.IP "\(bu" 3
\fB\f(CR--auto-optimise-store\fR\fR
.IP
Enable the \f(CRauto-optimise-store\fR setting.
.IP "\(bu" 3
\fB\f(CR--bash-prompt\fR\fR \fIvalue\fR
.IP
Set the \f(CRbash-prompt\fR setting.
.IP "\(bu" 3
\fB\f(CR--bash-prompt-prefix\fR\fR \fIvalue\fR
.IP
Set the \f(CRbash-prompt-prefix\fR setting.
.IP "\(bu" 3
\fB\f(CR--bash-prompt-suffix\fR\fR \fIvalue\fR
.IP
Set the \f(CRbash-prompt-suffix\fR setting.
.IP "\(bu" 3
\fB\f(CR--build-hook\fR\fR \fIvalue\fR
.IP
Set the \f(CRbuild-hook\fR setting.
.IP "\(bu" 3
\fB\f(CR--build-poll-interval\fR\fR \fIvalue\fR
.IP
Set the \f(CRbuild-poll-interval\fR setting.
.IP "\(bu" 3
\fB\f(CR--build-users-group\fR\fR \fIvalue\fR
.IP
Set the \f(CRbuild-users-group\fR setting.
.IP "\(bu" 3
\fB\f(CR--builders\fR\fR \fIvalue\fR
.IP
Set the \f(CRbuilders\fR setting.
.IP "\(bu" 3
\fB\f(CR--builders-use-substitutes\fR\fR
.IP
Enable the \f(CRbuilders-use-substitutes\fR setting.
.IP "\(bu" 3
\fB\f(CR--commit-lockfile-summary\fR\fR \fIvalue\fR
.IP
Set the \f(CRcommit-lockfile-summary\fR setting.
.IP "\(bu" 3
\fB\f(CR--compress-build-log\fR\fR
.IP
Enable the \f(CRcompress-build-log\fR setting.
.IP "\(bu" 3
\fB\f(CR--connect-timeout\fR\fR \fIvalue\fR
.IP
Set the \f(CRconnect-timeout\fR setting.
.IP "\(bu" 3
\fB\f(CR--cores\fR\fR \fIvalue\fR
.IP
Set the \f(CRcores\fR setting.
.IP "\(bu" 3
\fB\f(CR--diff-hook\fR\fR \fIvalue\fR
.IP
Set the \f(CRdiff-hook\fR setting.
.IP "\(bu" 3
\fB\f(CR--download-attempts\fR\fR \fIvalue\fR
.IP
Set the \f(CRdownload-attempts\fR setting.
.IP "\(bu" 3
\fB\f(CR--download-speed\fR\fR \fIvalue\fR
.IP
Set the \f(CRdownload-speed\fR setting.
.IP "\(bu" 3
\fB\f(CR--eval-cache\fR\fR
.IP
Enable the \f(CReval-cache\fR setting.
.IP "\(bu" 3
\fB\f(CR--experimental-features\fR\fR \fIvalue\fR
.IP
Set the \f(CRexperimental-features\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-access-tokens\fR\fR \fIvalue\fR
.IP
Append to the \f(CRaccess-tokens\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-allowed-impure-host-deps\fR\fR \fIvalue\fR
.IP
Append to the \f(CRallowed-impure-host-deps\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-allowed-uris\fR\fR \fIvalue\fR
.IP
Append to the \f(CRallowed-uris\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-allowed-users\fR\fR \fIvalue\fR
.IP
Append to the \f(CRallowed-users\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-build-hook\fR\fR \fIvalue\fR
.IP
Append to the \f(CRbuild-hook\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-experimental-features\fR\fR \fIvalue\fR
.IP
Append to the \f(CRexperimental-features\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-extra-platforms\fR\fR \fIvalue\fR
.IP
Append to the \f(CRextra-platforms\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-hashed-mirrors\fR\fR \fIvalue\fR
.IP
Append to the \f(CRhashed-mirrors\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-ignored-acls\fR\fR \fIvalue\fR
.IP
Append to the \f(CRignored-acls\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-nix-path\fR\fR \fIvalue\fR
.IP
Append to the \f(CRnix-path\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-platforms\fR\fR \fIvalue\fR
.IP
Set the \f(CRextra-platforms\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-plugin-files\fR\fR \fIvalue\fR
.IP
Append to the \f(CRplugin-files\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-sandbox-paths\fR\fR \fIvalue\fR
.IP
Append to the \f(CRsandbox-paths\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-secret-key-files\fR\fR \fIvalue\fR
.IP
Append to the \f(CRsecret-key-files\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-substituters\fR\fR \fIvalue\fR
.IP
Append to the \f(CRsubstituters\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-system-features\fR\fR \fIvalue\fR
.IP
Append to the \f(CRsystem-features\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-trusted-public-keys\fR\fR \fIvalue\fR
.IP
Append to the \f(CRtrusted-public-keys\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-trusted-substituters\fR\fR \fIvalue\fR
.IP
Append to the \f(CRtrusted-substituters\fR setting.
.IP "\(bu" 3
\fB\f(CR--extra-trusted-users\fR\fR \fIvalue\fR
.IP
Append to the \f(CRtrusted-users\fR setting.
.IP "\(bu" 3
\fB\f(CR--fallback\fR\fR
.IP
Enable the \f(CRfallback\fR setting.
.IP "\(bu" 3
\fB\f(CR--filter-syscalls\fR\fR
.IP
Enable the \f(CRfilter-syscalls\fR setting.
.IP "\(bu" 3
\fB\f(CR--flake-registry\fR\fR \fIvalue\fR
.IP
Set the \f(CRflake-registry\fR setting.
.IP "\(bu" 3
\fB\f(CR--fsync-metadata\fR\fR
.IP
Enable the \f(CRfsync-metadata\fR setting.
.IP "\(bu" 3
\fB\f(CR--gc-reserved-space\fR\fR \fIvalue\fR
.IP
Set the \f(CRgc-reserved-space\fR setting.
.IP "\(bu" 3
\fB\f(CR--hashed-mirrors\fR\fR \fIvalue\fR
.IP
Set the \f(CRhashed-mirrors\fR setting.
.IP "\(bu" 3
\fB\f(CR--http-connections\fR\fR \fIvalue\fR
.IP
Set the \f(CRhttp-connections\fR setting.
.IP "\(bu" 3
\fB\f(CR--http2\fR\fR
.IP
Enable the \f(CRhttp2\fR setting.
.IP "\(bu" 3
\fB\f(CR--id-count\fR\fR \fIvalue\fR
.IP
Set the \f(CRid-count\fR setting.
.IP "\(bu" 3
\fB\f(CR--ignore-try\fR\fR
.IP
Enable the \f(CRignore-try\fR setting.
.IP "\(bu" 3
\fB\f(CR--ignored-acls\fR\fR \fIvalue\fR
.IP
Set the \f(CRignored-acls\fR setting.
.IP "\(bu" 3
\fB\f(CR--impersonate-linux-26\fR\fR
.IP
Enable the \f(CRimpersonate-linux-26\fR setting.
.IP "\(bu" 3
\fB\f(CR--keep-build-log\fR\fR
.IP
Enable the \f(CRkeep-build-log\fR setting.
.IP "\(bu" 3
\fB\f(CR--keep-derivations\fR\fR
.IP
Enable the \f(CRkeep-derivations\fR setting.
.IP "\(bu" 3
\fB\f(CR--keep-env-derivations\fR\fR
.IP
Enable the \f(CRkeep-env-derivations\fR setting.
.IP "\(bu" 3
\fB\f(CR--keep-failed\fR\fR
.IP
Enable the \f(CRkeep-failed\fR setting.
.IP "\(bu" 3
\fB\f(CR--keep-going\fR\fR
.IP
Enable the \f(CRkeep-going\fR setting.
.IP "\(bu" 3
\fB\f(CR--keep-outputs\fR\fR
.IP
Enable the \f(CRkeep-outputs\fR setting.
.IP "\(bu" 3
\fB\f(CR--log-lines\fR\fR \fIvalue\fR
.IP
Set the \f(CRlog-lines\fR setting.
.IP "\(bu" 3
\fB\f(CR--max-build-log-size\fR\fR \fIvalue\fR
.IP
Set the \f(CRmax-build-log-size\fR setting.
.IP "\(bu" 3
\fB\f(CR--max-free\fR\fR \fIvalue\fR
.IP
Set the \f(CRmax-free\fR setting.
.IP "\(bu" 3
\fB\f(CR--max-jobs\fR\fR \fIvalue\fR
.IP
Set the \f(CRmax-jobs\fR setting.
.IP "\(bu" 3
\fB\f(CR--max-silent-time\fR\fR \fIvalue\fR
.IP
Set the \f(CRmax-silent-time\fR setting.
.IP "\(bu" 3
\fB\f(CR--max-substitution-jobs\fR\fR \fIvalue\fR
.IP
Set the \f(CRmax-substitution-jobs\fR setting.
.IP "\(bu" 3
\fB\f(CR--min-free\fR\fR \fIvalue\fR
.IP
Set the \f(CRmin-free\fR setting.
.IP "\(bu" 3
\fB\f(CR--min-free-check-interval\fR\fR \fIvalue\fR
.IP
Set the \f(CRmin-free-check-interval\fR setting.
.IP "\(bu" 3
\fB\f(CR--nar-buffer-size\fR\fR \fIvalue\fR
.IP
Set the \f(CRnar-buffer-size\fR setting.
.IP "\(bu" 3
\fB\f(CR--narinfo-cache-negative-ttl\fR\fR \fIvalue\fR
.IP
Set the \f(CRnarinfo-cache-negative-ttl\fR setting.
.IP "\(bu" 3
\fB\f(CR--narinfo-cache-positive-ttl\fR\fR \fIvalue\fR
.IP
Set the \f(CRnarinfo-cache-positive-ttl\fR setting.
.IP "\(bu" 3
\fB\f(CR--netrc-file\fR\fR \fIvalue\fR
.IP
Set the \f(CRnetrc-file\fR setting.
.IP "\(bu" 3
\fB\f(CR--nix-path\fR\fR \fIvalue\fR
.IP
Set the \f(CRnix-path\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-accept-flake-config\fR\fR
.IP
Disable the \f(CRaccept-flake-config\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-allow-dirty\fR\fR
.IP
Disable the \f(CRallow-dirty\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-allow-import-from-derivation\fR\fR
.IP
Disable the \f(CRallow-import-from-derivation\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-allow-new-privileges\fR\fR
.IP
Disable the \f(CRallow-new-privileges\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-allow-symlinked-store\fR\fR
.IP
Disable the \f(CRallow-symlinked-store\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-allow-unsafe-native-code-during-evaluation\fR\fR
.IP
Disable the \f(CRallow-unsafe-native-code-during-evaluation\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-auto-allocate-uids\fR\fR
.IP
Disable the \f(CRauto-allocate-uids\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-auto-optimise-store\fR\fR
.IP
Disable the \f(CRauto-optimise-store\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-builders-use-substitutes\fR\fR
.IP
Disable the \f(CRbuilders-use-substitutes\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-compress-build-log\fR\fR
.IP
Disable the \f(CRcompress-build-log\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-eval-cache\fR\fR
.IP
Disable the \f(CReval-cache\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-fallback\fR\fR
.IP
Disable the \f(CRfallback\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-filter-syscalls\fR\fR
.IP
Disable the \f(CRfilter-syscalls\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-fsync-metadata\fR\fR
.IP
Disable the \f(CRfsync-metadata\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-http2\fR\fR
.IP
Disable the \f(CRhttp2\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-ignore-try\fR\fR
.IP
Disable the \f(CRignore-try\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-impersonate-linux-26\fR\fR
.IP
Disable the \f(CRimpersonate-linux-26\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-keep-build-log\fR\fR
.IP
Disable the \f(CRkeep-build-log\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-keep-derivations\fR\fR
.IP
Disable the \f(CRkeep-derivations\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-keep-env-derivations\fR\fR
.IP
Disable the \f(CRkeep-env-derivations\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-keep-failed\fR\fR
.IP
Disable the \f(CRkeep-failed\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-keep-going\fR\fR
.IP
Disable the \f(CRkeep-going\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-keep-outputs\fR\fR
.IP
Disable the \f(CRkeep-outputs\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-preallocate-contents\fR\fR
.IP
Disable the \f(CRpreallocate-contents\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-print-missing\fR\fR
.IP
Disable the \f(CRprint-missing\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-pure-eval\fR\fR
.IP
Disable the \f(CRpure-eval\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-require-drop-supplementary-groups\fR\fR
.IP
Disable the \f(CRrequire-drop-supplementary-groups\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-require-sigs\fR\fR
.IP
Disable the \f(CRrequire-sigs\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-restrict-eval\fR\fR
.IP
Disable the \f(CRrestrict-eval\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-run-diff-hook\fR\fR
.IP
Disable the \f(CRrun-diff-hook\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-sandbox\fR\fR
.IP
Disable sandboxing.
.IP "\(bu" 3
\fB\f(CR--no-sandbox-fallback\fR\fR
.IP
Disable the \f(CRsandbox-fallback\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-show-trace\fR\fR
.IP
Disable the \f(CRshow-trace\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-substitute\fR\fR
.IP
Disable the \f(CRsubstitute\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-sync-before-registering\fR\fR
.IP
Disable the \f(CRsync-before-registering\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-trace-function-calls\fR\fR
.IP
Disable the \f(CRtrace-function-calls\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-trace-verbose\fR\fR
.IP
Disable the \f(CRtrace-verbose\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-use-case-hack\fR\fR
.IP
Disable the \f(CRuse-case-hack\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-use-cgroups\fR\fR
.IP
Disable the \f(CRuse-cgroups\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-use-registries\fR\fR
.IP
Disable the \f(CRuse-registries\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-use-sqlite-wal\fR\fR
.IP
Disable the \f(CRuse-sqlite-wal\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-use-xdg-base-directories\fR\fR
.IP
Disable the \f(CRuse-xdg-base-directories\fR setting.
.IP "\(bu" 3
\fB\f(CR--no-warn-dirty\fR\fR
.IP
Disable the \f(CRwarn-dirty\fR setting.
.IP "\(bu" 3
\fB\f(CR--plugin-files\fR\fR \fIvalue\fR
.IP
Set the \f(CRplugin-files\fR setting.
.IP "\(bu" 3
\fB\f(CR--post-build-hook\fR\fR \fIvalue\fR
.IP
Set the \f(CRpost-build-hook\fR setting.
.IP "\(bu" 3
\fB\f(CR--pre-build-hook\fR\fR \fIvalue\fR
.IP
Set the \f(CRpre-build-hook\fR setting.
.IP "\(bu" 3
\fB\f(CR--preallocate-contents\fR\fR
.IP
Enable the \f(CRpreallocate-contents\fR setting.
.IP "\(bu" 3
\fB\f(CR--print-missing\fR\fR
.IP
Enable the \f(CRprint-missing\fR setting.
.IP "\(bu" 3
\fB\f(CR--pure-eval\fR\fR
.IP
Enable the \f(CRpure-eval\fR setting.
.IP "\(bu" 3
\fB\f(CR--relaxed-sandbox\fR\fR
.IP
Enable sandboxing, but allow builds to disable it.
.IP "\(bu" 3
\fB\f(CR--require-drop-supplementary-groups\fR\fR
.IP
Enable the \f(CRrequire-drop-supplementary-groups\fR setting.
.IP "\(bu" 3
\fB\f(CR--require-sigs\fR\fR
.IP
Enable the \f(CRrequire-sigs\fR setting.
.IP "\(bu" 3
\fB\f(CR--restrict-eval\fR\fR
.IP
Enable the \f(CRrestrict-eval\fR setting.
.IP "\(bu" 3
\fB\f(CR--run-diff-hook\fR\fR
.IP
Enable the \f(CRrun-diff-hook\fR setting.
.IP "\(bu" 3
\fB\f(CR--sandbox\fR\fR
.IP
Enable sandboxing.
.IP "\(bu" 3
\fB\f(CR--sandbox-build-dir\fR\fR \fIvalue\fR
.IP
Set the \f(CRsandbox-build-dir\fR setting.
.IP "\(bu" 3
\fB\f(CR--sandbox-dev-shm-size\fR\fR \fIvalue\fR
.IP
Set the \f(CRsandbox-dev-shm-size\fR setting.
.IP "\(bu" 3
\fB\f(CR--sandbox-fallback\fR\fR
.IP
Enable the \f(CRsandbox-fallback\fR setting.
.IP "\(bu" 3
\fB\f(CR--sandbox-paths\fR\fR \fIvalue\fR
.IP
Set the \f(CRsandbox-paths\fR setting.
.IP "\(bu" 3
\fB\f(CR--secret-key-files\fR\fR \fIvalue\fR
.IP
Set the \f(CRsecret-key-files\fR setting.
.IP "\(bu" 3
\fB\f(CR--show-trace\fR\fR
.IP
Enable the \f(CRshow-trace\fR setting.
.IP "\(bu" 3
\fB\f(CR--ssl-cert-file\fR\fR \fIvalue\fR
.IP
Set the \f(CRssl-cert-file\fR setting.
.IP "\(bu" 3
\fB\f(CR--stalled-download-timeout\fR\fR \fIvalue\fR
.IP
Set the \f(CRstalled-download-timeout\fR setting.
.IP "\(bu" 3
\fB\f(CR--start-id\fR\fR \fIvalue\fR
.IP
Set the \f(CRstart-id\fR setting.
.IP "\(bu" 3
\fB\f(CR--store\fR\fR \fIvalue\fR
.IP
Set the \f(CRstore\fR setting.
.IP "\(bu" 3
\fB\f(CR--substitute\fR\fR
.IP
Enable the \f(CRsubstitute\fR setting.
.IP "\(bu" 3
\fB\f(CR--substituters\fR\fR \fIvalue\fR
.IP
Set the \f(CRsubstituters\fR setting.
.IP "\(bu" 3
\fB\f(CR--sync-before-registering\fR\fR
.IP
Enable the \f(CRsync-before-registering\fR setting.
.IP "\(bu" 3
\fB\f(CR--system\fR\fR \fIvalue\fR
.IP
Set the \f(CRsystem\fR setting.
.IP "\(bu" 3
\fB\f(CR--system-features\fR\fR \fIvalue\fR
.IP
Set the \f(CRsystem-features\fR setting.
.IP "\(bu" 3
\fB\f(CR--tarball-ttl\fR\fR \fIvalue\fR
.IP
Set the \f(CRtarball-ttl\fR setting.
.IP "\(bu" 3
\fB\f(CR--timeout\fR\fR \fIvalue\fR
.IP
Set the \f(CRtimeout\fR setting.
.IP "\(bu" 3
\fB\f(CR--trace-function-calls\fR\fR
.IP
Enable the \f(CRtrace-function-calls\fR setting.
.IP "\(bu" 3
\fB\f(CR--trace-verbose\fR\fR
.IP
Enable the \f(CRtrace-verbose\fR setting.
.IP "\(bu" 3
\fB\f(CR--trusted-public-keys\fR\fR \fIvalue\fR
.IP
Set the \f(CRtrusted-public-keys\fR setting.
.IP "\(bu" 3
\fB\f(CR--trusted-substituters\fR\fR \fIvalue\fR
.IP
Set the \f(CRtrusted-substituters\fR setting.
.IP "\(bu" 3
\fB\f(CR--trusted-users\fR\fR \fIvalue\fR
.IP
Set the \f(CRtrusted-users\fR setting.
.IP "\(bu" 3
\fB\f(CR--use-case-hack\fR\fR
.IP
Enable the \f(CRuse-case-hack\fR setting.
.IP "\(bu" 3
\fB\f(CR--use-cgroups\fR\fR
.IP
Enable the \f(CRuse-cgroups\fR setting.
.IP "\(bu" 3
\fB\f(CR--use-registries\fR\fR
.IP
Enable the \f(CRuse-registries\fR setting.
.IP "\(bu" 3
\fB\f(CR--use-sqlite-wal\fR\fR
.IP
Enable the \f(CRuse-sqlite-wal\fR setting.
.IP "\(bu" 3
\fB\f(CR--use-xdg-base-directories\fR\fR
.IP
Enable the \f(CRuse-xdg-base-directories\fR setting.
.IP "\(bu" 3
\fB\f(CR--user-agent-suffix\fR\fR \fIvalue\fR
.IP
Set the \f(CRuser-agent-suffix\fR setting.
.IP "\(bu" 3
\fB\f(CR--warn-dirty\fR\fR
.IP
Enable the \f(CRwarn-dirty\fR setting.