diff options
| -rw-r--r-- | Makefile.am | 1 | ||||
| -rw-r--r-- | guix/scripts/home.scm | 2 | ||||
| -rw-r--r-- | guix/scripts/home/import.scm | 241 |
3 files changed, 243 insertions, 1 deletions
diff --git a/Makefile.am b/Makefile.am index 93002b84bc..42e082a131 100644 --- a/Makefile.am +++ b/Makefile.am @@ -296,6 +296,7 @@ MODULES = \ guix/scripts/system/search.scm \ guix/scripts/system/reconfigure.scm \ guix/scripts/home.scm \ + guix/scripts/home/import.scm \ guix/scripts/lint.scm \ guix/scripts/challenge.scm \ guix/scripts/import/crate.scm \ diff --git a/guix/scripts/home.scm b/guix/scripts/home.scm index 9eb5c0c917..75df6d707d 100644 --- a/guix/scripts/home.scm +++ b/guix/scripts/home.scm @@ -36,7 +36,7 @@ #:use-module (guix scripts build) #:use-module (guix scripts system search) #:autoload (guix scripts pull) (channel-commit-hyperlink) - ;; #:use-module (guix scripts home import) + #:use-module (guix scripts home import) #:use-module ((guix status) #:select (with-status-verbosity)) #:use-module (guix gexp) #:use-module (guix monads) diff --git a/guix/scripts/home/import.scm b/guix/scripts/home/import.scm new file mode 100644 index 0000000000..39f45dbeac --- /dev/null +++ b/guix/scripts/home/import.scm @@ -0,0 +1,241 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz> +;;; Copyright © 2021 Andrew Tropin <andrew@trop.in> +;;; +;;; 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 (ice-9 match) + #:use-module (ice-9 pretty-print) + #:use-module (srfi srfi-1) + #:export (import-manifest)) + +;;; Commentary: +;;; +;;; This module provides utilities for generating home service +;;; configurations from existing "dotfiles". +;;; +;;; Code: + + +(define (generate-bash-module+configuration) + (let ((rc (string-append (getenv "HOME") "/.bashrc")) + (profile (string-append (getenv "HOME") "/.bash_profile")) + (logout (string-append (getenv "HOME") "/.bash_logout"))) + `((gnu home-services bash) + (service home-bash-service-type + (home-bash-configuration + ,@(if (file-exists? rc) + `((bashrc + (list (slurp-file-gexp (local-file ,rc))))) + '()) + ,@(if (file-exists? profile) + `((bash-profile + (list (slurp-file-gexp + (local-file ,profile))))) + '()) + ,@(if (file-exists? logout) + `((bash-logout + (list (slurp-file-gexp + (local-file ,logout))))) + '())))))) + + +(define %files-configurations-alist + `((".bashrc" . ,generate-bash-module+configuration) + (".bash_profile" . ,generate-bash-module+configuration) + (".bash_logout" . ,generate-bash-module+configuration))) + +(define (modules+configurations) + (let ((configurations (delete-duplicates + (filter-map (match-lambda + ((file . proc) + (if (file-exists? + (string-append (getenv "HOME") "/" file)) + proc + #f))) + %files-configurations-alist) + (lambda (x y) + (equal? (procedure-name x) (procedure-name y)))))) + (map (lambda (proc) (proc)) configurations))) + +;; Based on `manifest->code' from (guix profiles) +;; MAYBE: Upstream it? +(define* (manifest->code manifest + #:key + (entry-package-version (const "")) + (home-environment? #f)) + "Return an sexp representing code to build an approximate version of +MANIFEST; the code is wrapped in a top-level 'begin' form. If +HOME-ENVIRONMENT? is #t, return an <home-environment> definition. +Call ENTRY-PACKAGE-VERSION to determine the version number to use in +the spec for a given entry; it can be set to 'manifest-entry-version' +for fully-specified version numbers, or to some other procedure to +disambiguate versions for packages for which several versions are +available." + (define (entry-transformations entry) + ;; Return the transformations that apply to ENTRY. + (assoc-ref (manifest-entry-properties entry) 'transformations)) + + (define transformation-procedures + ;; List of transformation options/procedure name pairs. + (let loop ((entries (manifest-entries manifest)) + (counter 1) + (result '())) + (match entries + (() result) + ((entry . tail) + (match (entry-transformations entry) + (#f + (loop tail counter result)) + (options + (if (assoc-ref result options) + (loop tail counter result) + (loop tail (+ 1 counter) + (alist-cons options + (string->symbol + (format #f "transform~a" counter)) + result))))))))) + + (define (qualified-name entry) + ;; Return the name of ENTRY possibly with "@" followed by a version. + (match (entry-package-version entry) + ("" (manifest-entry-name entry)) + (version (string-append (manifest-entry-name entry) + "@" version)))) + + (if (null? transformation-procedures) + (let ((specs (map (lambda (entry) + (match (manifest-entry-output entry) + ("out" (qualified-name entry)) + (output (string-append (qualified-name entry) + ":" output)))) + (manifest-entries manifest)))) + (if home-environment? + (let ((modules+configurations (modules+configurations))) + `(begin + (use-modules (gnu home) + (gnu packages) + ,@(map first modules+configurations)) + ,(home-environment-template + #:specs specs + #:services (map second modules+configurations)))) + `(begin + (use-modules (gnu packages)) + + (specifications->manifest + (list ,@specs))))) + (let* ((transform (lambda (options exp) + (if (not options) + exp + (let ((proc (assoc-ref transformation-procedures + options))) + `(,proc ,exp))))) + (packages (map (lambda (entry) + (define options + (entry-transformations entry)) + + (define name + (qualified-name entry)) + + (match (manifest-entry-output entry) + ("out" + (transform options + `(specification->package ,name))) + (output + `(list ,(transform + options + `(specification->package ,name)) + ,output)))) + (manifest-entries manifest))) + (transformations (map (match-lambda + ((options . name) + `(define ,name + (options->transformation ',options)))) + transformation-procedures))) + (if home-environment? + (let ((modules+configurations (modules+configurations))) + `(begin + (use-modules (guix transformations) + (gnu home) + (gnu packages) + ,@(map first modules+configurations)) + + ,@transformations + + ,(home-environment-template + #:packages packages + #:services (map second modules+configurations)))) + `(begin + (use-modules (guix transformations) + (gnu packages)) + + ,@transformations + + (packages->manifest + (list ,@packages))))))) + +(define* (home-environment-template #:key (packages #f) (specs #f) services) + "Return an S-exp containing a <home-environment> declaration +containing PACKAGES, or SPECS (package specifications), and SERVICES." + `(home-environment + (packages + ,@(if packages + `((list ,@packages)) + `((map specification->package + (list ,@specs))))) + (services (list ,@services)))) + +(define* (import-manifest + manifest + #:optional (port (current-output-port))) + "Write to PORT a <home-environment> corresponding to MANIFEST." + (define (version-spec entry) + (let ((name (manifest-entry-name entry))) + (match (map package-version (find-packages-by-name name)) + ((_) + ;; A single version of NAME is available, so do not specify the + ;; version number, even if the available version doesn't match ENTRY. + "") + (versions + ;; If ENTRY uses the latest version, don't specify any version. + ;; Otherwise return the shortest unique version prefix. Note that + ;; this is based on the currently available packages, which could + ;; differ from the packages available in the revision that was used + ;; to build MANIFEST. + (let ((current (manifest-entry-version entry))) + (if (every (cut version>? current <>) + (delete current versions)) + "" + (version-unique-prefix (manifest-entry-version entry) + versions))))))) + + (match (manifest->code manifest + #:entry-package-version version-spec + #:home-environment? #t) + (('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)))) |