d1fa5dd85c
In general the man pages do not care what OS and manual they are shipped with, so they don't get to choose the names of them. We were tempted to do so, as we had inconsistently chosen OS names for the mandoc and man-db/groff implementations. Since this has been rectified since, we can just drop this boilerplate from the man pages.
90 lines
1.5 KiB
Groff
90 lines
1.5 KiB
Groff
.Dd January 1, 1980
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.Dt nixos-option 8
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.Os
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.Sh NAME
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.Nm nixos-option
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.Nd inspect a NixOS configuration
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.
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.
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.
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.Sh SYNOPSIS
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.Nm
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.Op Fl r | -recursive
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.Op Fl I Ar path
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.Ar option.name
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.
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.
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.
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.Sh DESCRIPTION
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This command evaluates the configuration specified in
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.Pa /etc/nixos/configuration.nix
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and returns the properties of the option name given as argument.
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.
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.Pp
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When the option name is not an option, the command prints the list of attributes
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contained in the attribute set.
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.
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.
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.
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.Sh OPTIONS
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.Bl -tag -width indent
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.It Fl r , -recursive
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Print all the values at or below the specified path recursively.
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.
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.It Fl I Ar path
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This option is passed to the underlying
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.Xr nix-instantiate 1
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invocation.
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.El
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.
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.
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.
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.Sh ENVIRONMENT
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.Bl -tag -width indent
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.It Ev NIXOS_CONFIG
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Path to the main NixOS configuration module. Defaults to
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.Pa /etc/nixos/configuration.nix Ns
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\&.
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.El
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.
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.
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.
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.Sh EXAMPLES
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Investigate option values:
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.Bd -literal -offset indent
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$ nixos-option boot.loader
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This attribute set contains:
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generationsDir
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grub
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initScript
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$ nixos-option boot.loader.grub.enable
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Value:
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true
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Default:
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true
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Description:
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Whether to enable the GNU GRUB boot loader.
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Declared by:
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"/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix"
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Defined by:
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"/nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/loader/grub/grub.nix"
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.Ed
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.
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.
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.
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.Sh SEE ALSO
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.Xr configuration.nix 5
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.
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.
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.
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.Sh AUTHORS
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.An -nosplit
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.An Nicolas Pierron
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and
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.An the Nixpkgs/NixOS contributors
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