gnu: vm: Factorize /etc creation.
* gnu/system/vm.scm (expression->derivation-in-linux-vm)[lower-inputs]: Move to top-level... (lower-inputs): ... here. New variable. (file-union, etc-directory): New procedures. (system-qemu-image): Use 'etc-directory'; remove redundant code, and register the result of 'etc-directory' as a GC root.
This commit is contained in:
Ludovic Courtès
parent
dc47b181da
commit
0b8a376b68
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@ -59,6 +59,21 @@
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;;;
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;;; Code:
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(define (lower-inputs inputs)
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"Turn any package from INPUTS into a derivation; return the corresponding
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input list as a monadic value."
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(with-monad %store-monad
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(sequence %store-monad
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(map (match-lambda
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((name (? package? package) sub-drv ...)
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(mlet %store-monad ((drv (package->derivation package)))
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(return `(,name ,drv ,@sub-drv))))
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((name (? string? file))
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(return `(,name ,file)))
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(tuple
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(return tuple)))
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inputs))))
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(define* (expression->derivation-in-linux-vm name exp
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#:key
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(system (%current-system))
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@ -168,21 +183,6 @@ made available under the /xchg CIFS share."
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(mkdir out)
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(copy-recursively "xchg" out)))))))
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(define (lower-inputs inputs)
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;; Turn any package in INPUTS into a derivation.
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(with-monad %store-monad
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(sequence %store-monad
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(map (match-lambda
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((name (? package? package) sub-drv ...)
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(mlet %store-monad ((drv (package->derivation package)))
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(return `(,name ,drv ,@sub-drv))))
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((name (? string? file))
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(return `(,name ,file)))
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(tuple
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(return tuple)))
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inputs))))
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(mlet* %store-monad
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((input-alist (sequence %store-monad input-alist))
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(exp* -> `(let ((%build-inputs ',input-alist))
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@ -458,24 +458,92 @@ input tuples."
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#:modules '((guix build union))
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#:guile-for-build guile)))
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(define* (file-union files
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#:key (inputs '()) (name "file-union"))
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"Return a derivation that builds a directory containing all of FILES. Each
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item in FILES must be a list where the first element is the file name to use
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in the new directory, and the second element is the target file.
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The subset of FILES corresponding to plain store files is automatically added
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as an inputs; additional inputs, such as derivations, are taken from INPUTS."
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(mlet %store-monad ((inputs (lower-inputs inputs)))
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(let ((inputs (append inputs
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(filter (match-lambda
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((_ file)
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(direct-store-path? file)))
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files))))
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(derivation-expression name
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`(let ((out (assoc-ref %outputs "out")))
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(mkdir out)
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(chdir out)
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,@(map (match-lambda
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((name target)
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`(symlink ,target ,name)))
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files))
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#:inputs inputs))))
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(define* (etc-directory #:key
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(accounts '())
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(groups '())
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(pam-services '())
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(profile "/var/run/current-system/profile"))
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"Return a derivation that builds the static part of the /etc directory."
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(mlet* %store-monad
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((services (package-file net-base "etc/services"))
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(protocols (package-file net-base "etc/protocols"))
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(rpc (package-file net-base "etc/rpc"))
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(passwd (passwd-file accounts))
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(shadow (passwd-file accounts #:shadow? #t))
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(group (group-file groups))
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(pam.d (pam-services->directory pam-services))
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(login.defs (text-file "login.defs" "# Empty for now.\n"))
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(issue (text-file "issue" "
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This is an alpha preview of the GNU system. Welcome.
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This image features the GNU Guix package manager, which was used to
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build it (http://www.gnu.org/software/guix/). The init system is
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GNU dmd (http://www.gnu.org/software/dmd/).
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You can log in as 'guest' or 'root' with no password.
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"))
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;; TODO: Generate bashrc from packages' search-paths.
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(bashrc (text-file "bashrc" (string-append "
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export PS1='\\u@\\h\\$ '
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export PATH=$HOME/.guix-profile/bin:" profile "/bin:" profile "/sbin
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export CPATH=$HOME/.guix-profile/include:" profile "/include
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export LIBRARY_PATH=$HOME/.guix-profile/lib:" profile "/lib
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alias ls='ls -p --color'
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alias ll='ls -l'
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")))
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(resolv.conf
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;; Name resolution for default QEMU settings.
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;; FIXME: Move to networking service.
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(text-file "resolv.conf" "nameserver 10.0.2.3\n"))
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(files -> `(("services" ,services)
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("protocols" ,protocols)
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("rpc" ,rpc)
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("pam.d" ,(derivation->output-path pam.d))
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("login.defs" ,login.defs)
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("issue" ,issue)
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("profile" ,bashrc)
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("passwd" ,passwd)
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("shadow" ,shadow)
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("group" ,group)
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("resolv.conf" ,resolv.conf))))
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(file-union files
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#:inputs `(("net" ,net-base)
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("pam.d" ,pam.d))
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#:name "etc")))
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(define (system-qemu-image)
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"Return the derivation of a QEMU image of the GNU system."
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(define build-user-gid 30000)
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(mlet* %store-monad
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((motd (text-file "motd" "
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Happy birthday, GNU! http://www.gnu.org/gnu30
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"))
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(%pam-services ->
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;; Services known to PAM.
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(list %pam-other-services
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(unix-pam-service "login"
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#:allow-empty-passwords? #t
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#:motd motd)))
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(services (listm %store-monad
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((services (listm %store-monad
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(host-name-service "gnu")
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(mingetty-service "tty1")
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(mingetty-service "tty2")
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@ -490,17 +558,19 @@ Happy birthday, GNU! http://www.gnu.org/gnu30
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;; QEMU networking settings.
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(static-networking-service "eth0" "10.0.2.10"
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#:gateway "10.0.2.2")))
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(motd (text-file "motd" "
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Happy birthday, GNU! http://www.gnu.org/gnu30
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"))
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(pam-services ->
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;; Services known to PAM.
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(list %pam-other-services
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(unix-pam-service "login"
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#:allow-empty-passwords? #t
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#:motd motd)))
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(build-accounts (guix-build-accounts 10 #:gid build-user-gid))
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(resolv.conf
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;; Name resolution for default QEMU settings.
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(text-file "resolv.conf" "nameserver 10.0.2.3\n"))
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(etc-services (package-file net-base "etc/services"))
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(etc-protocols (package-file net-base "etc/protocols"))
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(etc-rpc (package-file net-base "etc/rpc"))
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(bash-file (package-file bash "bin/bash"))
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(dmd-file (package-file dmd "bin/dmd"))
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(dmd-conf (dmd-configuration-file services))
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@ -519,9 +589,7 @@ Happy birthday, GNU! http://www.gnu.org/gnu30
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(home-directory "/home/guest")
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(shell bash-file))
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build-accounts))
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(passwd (passwd-file accounts))
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(shadow (passwd-file accounts #:shadow? #t))
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(group (group-file (list (user-group
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(groups -> (list (user-group
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(name "root")
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(id 0))
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(user-group
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@ -532,10 +600,7 @@ Happy birthday, GNU! http://www.gnu.org/gnu30
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(name "guixbuild")
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(id build-user-gid)
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(members (map user-account-name
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build-accounts))))))
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(pam.d-drv (pam-services->directory %pam-services))
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(pam.d -> (derivation->output-path pam.d-drv))
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build-accounts)))))
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(packages -> `(("coreutils" ,coreutils)
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("bash" ,bash)
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("guile" ,guile-2.0)
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@ -552,46 +617,34 @@ Happy birthday, GNU! http://www.gnu.org/gnu30
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("guix" ,guix)))
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;; TODO: Replace with a real profile with a manifest.
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;; TODO: Generate bashrc from packages' search-paths.
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(profile-drv (union packages
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#:name "default-profile"))
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(profile -> (derivation->output-path profile-drv))
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(bashrc (text-file "bashrc" (string-append "
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export PS1='\\u@\\h\\$ '
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export PATH=$HOME/.guix-profile/bin:" profile "/bin:" profile "/sbin
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export CPATH=$HOME/.guix-profile/include:" profile "/include
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export LIBRARY_PATH=$HOME/.guix-profile/lib:" profile "/lib
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alias ls='ls -p --color'
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alias ll='ls -l'
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")))
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(etc-drv (etc-directory #:accounts accounts #:groups groups
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#:pam-services pam-services
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#:profile profile))
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(etc -> (derivation->output-path etc-drv))
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(issue (text-file "issue" "
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This is an alpha preview of the GNU system. Welcome.
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This image features the GNU Guix package manager, which was used to
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build it (http://www.gnu.org/software/guix/). The init system is
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GNU dmd (http://www.gnu.org/software/dmd/).
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You can log in as 'guest' or 'root' with no password.
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"))
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(populate -> `((directory "/nix/store" 0 ,build-user-gid)
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(directory "/etc")
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(directory "/var/log") ; for dmd
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(directory "/var/run/nscd")
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("/etc/shadow" -> ,shadow)
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("/etc/passwd" -> ,passwd)
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("/etc/group" -> ,group)
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("/etc/login.defs" -> "/dev/null")
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("/etc/pam.d" -> ,pam.d)
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("/etc/resolv.conf" -> ,resolv.conf)
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("/etc/profile" -> ,bashrc)
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("/etc/issue" -> ,issue)
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("/etc/services" -> ,etc-services)
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("/etc/protocols" -> ,etc-protocols)
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("/etc/rpc" -> ,etc-rpc)
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("/etc/static" -> ,etc)
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("/etc/shadow" -> "/etc/static/shadow")
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("/etc/passwd" -> "/etc/static/passwd")
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("/etc/group" -> "/etc/static/group")
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("/etc/login.defs" -> "/etc/static/login.defs")
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("/etc/pam.d" -> "/etc/static/pam.d")
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("/etc/resolv.conf" -> "/etc/static/resolv.conf")
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("/etc/profile" -> "/etc/static/profile")
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("/etc/issue" -> "/etc/static/issue")
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("/etc/services" -> "/etc/static/services")
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("/etc/protocols" -> "/etc/static/protocols")
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("/etc/rpc" -> "/etc/static/rpc")
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(directory "/var/nix/gcroots")
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("/var/nix/gcroots/default-profile" -> ,profile)
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("/var/nix/gcroots/etc-directory" -> ,etc)
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(directory "/tmp")
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(directory "/var/nix/profiles/per-user/root" 0 0)
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(directory "/var/nix/profiles/per-user/guest"
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@ -617,20 +670,9 @@ You can log in as 'guest' or 'root' with no password.
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#:inputs-to-copy `(("boot" ,boot)
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("linux" ,linux-libre)
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("initrd" ,gnu-system-initrd)
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("pam.d" ,pam.d-drv)
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("profile" ,profile-drv)
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;; Configuration.
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("dmd.conf" ,dmd-conf)
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("etc-pam.d" ,pam.d-drv)
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("etc-passwd" ,passwd)
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("etc-shadow" ,shadow)
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("etc-group" ,group)
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("etc-resolv.conf" ,resolv.conf)
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("etc-bashrc" ,bashrc)
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("etc-issue" ,issue)
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("etc-motd" ,motd)
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("net-base" ,net-base)
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("profile" ,profile-drv)
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("etc" ,etc-drv)
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,@(append-map service-inputs
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services)))))
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