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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2021 Andrew Tropin <andrew@trop.in>
;;; Copyright © 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2022 Arjan Adriaanse <arjan@adriaan.se>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix scripts home import)
#:use-module (guix profiles)
#:use-module (guix ui)
#:use-module (guix utils)
#:use-module (guix packages)
#:autoload (guix scripts package) (manifest-entry-version-prefix)
#:use-module (gnu packages)
#:use-module (ice-9 match)
#:use-module (ice-9 pretty-print)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 regex)
#:use-module (ice-9 popen)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:export (import-manifest
;; For tests.
manifest+configuration-files->code))
;;; Commentary:
;;;
;;; This module provides utilities for generating home service
;;; configurations from existing "dotfiles".
;;;
;;; Code:
(define (basename+remove-dots file-name)
"Remove the dot from the dotfile FILE-NAME; replace the other dots in
FILE-NAME with \"-\", and return the basename of it."
(string-map (match-lambda
(#\. #\-)
(c c))
(let ((base (basename file-name)))
(if (string-prefix? "." base)
(string-drop base 1)
base))))
(define (generate-bash-configuration+modules destination-directory)
(define (destination-append path)
(string-append destination-directory "/" path))
(define (bash-alias->pair line)
(if (string-prefix? "alias" line)
(let ((matched (string-match "alias (.+)=\"?'?([^\"']+)\"?'?" line)))
`(,(match:substring matched 1) . ,(match:substring matched 2)))
'()))
(define (parse-aliases input)
(let loop ((line (read-line input))
(result '()))
(if (eof-object? line)
(reverse result)
(loop (read-line input)
(cons (bash-alias->pair line) result)))))
(let ((rc (destination-append ".bashrc"))
(profile (destination-append ".bash_profile"))
(logout (destination-append ".bash_logout")))
`((service home-bash-service-type
(home-bash-configuration
,@(if (file-exists? rc)
`((aliases
',(let* ((port (open-pipe* OPEN_READ "bash" "-i" "-c" "alias"))
(alist (parse-aliases port)))
(close-port port)
(filter (negate null?) alist))))
'())
,@(if (file-exists? rc)
`((bashrc
(list (local-file ,rc
,(basename+remove-dots rc)))))
'())
,@(if (file-exists? profile)
`((bash-profile
(list (local-file ,profile
,(basename+remove-dots profile)))))
'())
,@(if (file-exists? logout)
`((bash-logout
(list (local-file ,logout
,(basename+remove-dots logout)))))
'())))
(guix gexp)
(gnu home services shells))))
(define %files+configurations-alist
`((".bashrc" . ,generate-bash-configuration+modules)
(".bash_profile" . ,generate-bash-configuration+modules)
(".bash_logout" . ,generate-bash-configuration+modules)))
(define (configurations+modules configuration-directory)
"Return a list of procedures which when called, generate code for a home
service declaration. Copy configuration files to CONFIGURATION-DIRECTORY; the
generated service declarations will refer to those files that have been saved
in CONFIGURATION-DIRECTORY."
(define configurations
(delete-duplicates
(filter-map (match-lambda
((file . proc)
(let ((absolute-path (string-append (getenv "HOME")
"/" file)))
(and (file-exists? absolute-path)
(begin
(copy-file absolute-path
(string-append
configuration-directory "/" file))
proc)))))
%files+configurations-alist)
eq?))
(map (lambda (proc) (proc configuration-directory)) configurations))
(define (manifest+configuration-files->code manifest
configuration-directory)
"Read MANIFEST and the user's configuration files listed in
%FILES+CONFIGURATIONS-ALIST, and return a 'home-environment' sexp. Copy the
user's files to CONFIGURATION-DIRECTORY; the generated sexp refers to them."
(match (manifest->code manifest
#:entry-package-version
manifest-entry-version-prefix)
(('begin ('use-modules profile-modules ...)
definitions ... ('packages->manifest packages))
(match (configurations+modules configuration-directory)
(((services . modules) ...)
`(begin
(use-modules (gnu home)
(gnu packages)
(gnu services)
,@(delete-duplicates
(append profile-modules (concatenate modules))))
,@definitions
(home-environment
(packages ,packages)
(services (list ,@services)))))))
(('begin ('specifications->manifest packages))
(match (configurations+modules configuration-directory)
(((services . modules) ...)
`(begin
(use-modules (gnu home)
(gnu packages)
(gnu services)
,@(delete-duplicates (concatenate modules)))
(home-environment
(packages (map (compose list specification->package+output)
,packages))
(services (list ,@services)))))))))
(define* (import-manifest
manifest destination-directory
#:optional (port (current-output-port)))
"Write to PORT a <home-environment> corresponding to MANIFEST."
(match (manifest+configuration-files->code manifest
destination-directory)
(('begin exp ...)
(format port (G_ "\
;; This \"home-environment\" file can be passed to 'guix home reconfigure'
;; to reproduce the content of your profile. This is \"symbolic\": it only
;; specifies package names. To reproduce the exact same profile, you also
;; need to capture the channels being used, as returned by \"guix describe\".
;; See the \"Replicating Guix\" section in the manual.\n"))
(for-each (lambda (exp)
(newline port)
(pretty-print exp port))
exp))))
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