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environment; that is, an operating system environment in which there is (essentially) only a store. The script `make-disk.sh' creates an ext2 disk image, creates a Nix store in it, and copies the closure of the bash package (from nixpkgs) to it. The script `run.sh' then starts bash in a UML virtual machine. The contents of the image after creation look like this: $ ls -l drwxr-xr-x 2 root root 1024 2004-02-14 19:13 dev lrwxrwxrwx 1 root root 61 2004-02-14 23:34 init -> /nix/store/e40873ece7a010752ad72b4262b23d28-bash-2.05b/bin/sh drwx------ 2 root root 12288 2004-02-14 19:13 lost+found drwxr-xr-x 4 root root 1024 2004-02-14 19:13 nix drwxr-xr-x 2 root root 1024 2004-02-14 19:13 proc drwxrwxrwt 2 root root 1024 2004-02-14 19:13 tmp The next step is to add all the other stuff that goes into a working system (coreutils, etc.). BTW, if you don't have `ls' you can still list directories by doing `echo *' :-) Nix itself should also be Nixified so that it can be put into the store. svn path=/nixu/trunk/; revision=783
65 lines
1.3 KiB
Bash
Executable file
65 lines
1.3 KiB
Bash
Executable file
#! /bin/sh -e
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initExpr=$1
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make_dir() {
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mode=$1
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name=$2
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echo creating $name...
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if ! test -d $root/$name; then mkdir $root/$name; fi
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chmod $mode $root/$name
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}
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root=/tmp/mnt
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echo mounting...
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mount -t ext2 /dev/discs/disc0/disc $root
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make_dir 00755 /dev
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make_dir 00755 /proc
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make_dir 01777 /tmp
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make_dir 00755 /nix
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make_dir 00755 /nix/store
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make_dir 00755 /nix/var
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make_dir 00755 /nix/var/nix
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make_dir 00755 /nix/var/nix/db
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make_dir 00755 /nix/var/log
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make_dir 00755 /nix/var/log/nix
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export NIX_ROOT=$root
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echo initialising Nix DB...
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/nix/bin/nix-store --init
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echo verifying Nix DB...
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/nix/bin/nix-store --verify
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echo registering valid paths...
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(while read storepath; do
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echo PATH $storepath
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if ! /nix/bin/nix-store --isvalid $storepath 2> /dev/null; then
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(unset NIX_ROOT; /nix/bin/nix-store --dump $storepath) | /nix/bin/nix-store --restore $storepath
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/nix/bin/nix-store --validpath $storepath
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fi
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done) < /tmp/storepaths
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echo registering successors...
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(while read line; do
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echo SUCC $line
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/nix/bin/nix-store --successor $line
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done) < /tmp/successors
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echo setting init symlink...
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initPath=$(/nix/bin/nix-store -qn $initExpr)
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rm -f $root/init
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ln -s $initPath/bin/sh $root/init
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echo unmounting...
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umount $root
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echo syncing...
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sync
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echo halting...
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/sbin/halt -d -f
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