mirror of git://git.savannah.gnu.org/guix.git
208 lines
8.1 KiB
Scheme
208 lines
8.1 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2014-2016, 2022-2023 Ludovic Courtès <ludo@gnu.org>
|
||
;;;
|
||
;;; 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 monad-repl)
|
||
#:use-module (guix store)
|
||
#:use-module (guix monads)
|
||
#:use-module (guix utils)
|
||
#:use-module (guix packages)
|
||
#:autoload (guix build-system) (bag)
|
||
#:use-module (guix status)
|
||
#:autoload (guix gexp) (gexp gexp? lower-gexp lowered-gexp-sexp lower-object)
|
||
#:use-module ((guix derivations)
|
||
#:select (derivation?
|
||
derivation->output-paths built-derivations))
|
||
#:autoload (guix read-print) (pretty-print-with-comments)
|
||
#:use-module (ice-9 match)
|
||
#:autoload (ice-9 pretty-print) (pretty-print)
|
||
#:use-module (system repl repl)
|
||
#:use-module (system repl common)
|
||
#:use-module (system repl command)
|
||
#:use-module (system base language)
|
||
#:use-module (system base compile)
|
||
#:use-module (srfi srfi-26)
|
||
#:export (run-in-store
|
||
enter-store-monad))
|
||
|
||
;;; Comment:
|
||
;;;
|
||
;;; This modules provides a couple of REPL meta-commands that make it easier
|
||
;;; to work with monadic procedures in the store monad.
|
||
;;;
|
||
;;; Code:
|
||
|
||
(define* (monad-language monad run #:optional (name 'monad))
|
||
"Return a language with a special evaluator that causes monadic values
|
||
to be \"run\" in MONAD using procedure RUN."
|
||
(let ((scheme (lookup-language 'scheme)))
|
||
(define (evaluate-monadic-expression exp env)
|
||
(let ((mvalue (compile exp #:to 'value #:env env)))
|
||
(run mvalue)))
|
||
|
||
(make-language #:name name
|
||
#:title "Monad"
|
||
#:reader (language-reader scheme)
|
||
#:compilers (language-compilers scheme)
|
||
#:decompilers (language-decompilers scheme)
|
||
#:evaluator evaluate-monadic-expression
|
||
#:printer (language-printer scheme)
|
||
#:make-default-environment
|
||
(language-make-default-environment scheme))))
|
||
|
||
(define* (default-guile-derivation store #:optional (system (%current-system)))
|
||
"Return the derivation of the default "
|
||
(package-derivation store (default-guile) system))
|
||
|
||
(define (store-monad-language store)
|
||
"Return a compiler language for the store monad using STORE."
|
||
(let ((guile (or (%guile-for-build)
|
||
(default-guile-derivation store))))
|
||
(monad-language %store-monad
|
||
(cut run-with-store store <>
|
||
#:guile-for-build guile)
|
||
'store-monad)))
|
||
|
||
(define %build-verbosity
|
||
;; Current build verbosity level.
|
||
1)
|
||
|
||
(define* (evaluate/print-with-store mvalue #:key build?)
|
||
"Run monadic value MVALUE in the store monad and print its value."
|
||
(with-store store
|
||
(set-build-options store
|
||
#:print-build-trace #t
|
||
#:print-extended-build-trace? #t
|
||
#:multiplexed-build-output? #t)
|
||
(with-status-verbosity %build-verbosity
|
||
(let* ((guile (or (%guile-for-build)
|
||
(default-guile-derivation store)))
|
||
(values (run-with-store store
|
||
(if build?
|
||
(mlet %store-monad ((obj mvalue))
|
||
(if (derivation? obj)
|
||
(mbegin %store-monad
|
||
(built-derivations (list obj))
|
||
(return
|
||
(match (derivation->output-paths obj)
|
||
(((_ . files) ...) files))))
|
||
(return (list obj))))
|
||
(mlet %store-monad ((obj mvalue))
|
||
(return (list obj))))
|
||
#:guile-for-build guile)))
|
||
(for-each (lambda (value)
|
||
(run-hook before-print-hook value)
|
||
(pretty-print value))
|
||
values)))))
|
||
|
||
(define-meta-command ((run-in-store guix) repl (form))
|
||
"run-in-store EXP
|
||
Run EXP through the store monad."
|
||
(evaluate/print-with-store (repl-eval repl form)))
|
||
|
||
(define-meta-command ((verbosity guix) repl (level))
|
||
"verbosity LEVEL
|
||
Change build verbosity to LEVEL."
|
||
(set! %build-verbosity (repl-eval repl level)))
|
||
|
||
(define-meta-command ((lower guix) repl (form))
|
||
"lower OBJECT
|
||
Lower OBJECT into a derivation or store file and return it."
|
||
(evaluate/print-with-store (lower-object (repl-eval repl form))))
|
||
|
||
(define-meta-command ((build guix) repl (form))
|
||
"build OBJECT
|
||
Lower OBJECT and build it, returning its output file name(s)."
|
||
(evaluate/print-with-store (lower-object (repl-eval repl form))
|
||
#:build? #t))
|
||
|
||
(define-meta-command ((enter-store-monad guix) repl)
|
||
"enter-store-monad
|
||
Enter a REPL for values in the store monad."
|
||
(with-store store
|
||
(let ((new (make-repl (store-monad-language store))))
|
||
;; Force interpretation so that our specially-crafted language evaluator
|
||
;; is actually used.
|
||
(repl-option-set! new 'interp #t)
|
||
(run-repl new))))
|
||
|
||
|
||
;;;
|
||
;;; Viewing package arguments.
|
||
;;;
|
||
|
||
(define (keyword-argument-value args keyword default)
|
||
"Return the value associated with KEYWORD in ARGS, a keyword/value sequence,
|
||
or DEFAULT if KEYWORD is missing from ARGS."
|
||
(let loop ((args args))
|
||
(match args
|
||
(()
|
||
default)
|
||
((kw value rest ...)
|
||
(if (eq? kw keyword)
|
||
value
|
||
(loop rest))))))
|
||
|
||
(define (package-argument-command repl form keyword default)
|
||
"Implement a command that display KEYWORD, a keyword such as #:phases, in
|
||
the arguments of the package FORM evaluates to. Return DEFAULT is KEYWORD is
|
||
missing from those arguments."
|
||
(match (repl-eval repl form)
|
||
((? package? package)
|
||
(let* ((bag* (bag
|
||
(inherit (package->bag package))
|
||
(build (lambda* (name inputs #:rest args)
|
||
(with-monad %store-monad
|
||
(return (keyword-argument-value args keyword
|
||
default))))))))
|
||
(define phases
|
||
(parameterize ((%graft? #f))
|
||
(with-store store
|
||
(set-build-options store
|
||
#:print-build-trace #t
|
||
#:print-extended-build-trace? #t
|
||
#:multiplexed-build-output? #t)
|
||
(run-with-store store
|
||
(mlet %store-monad ((exp (bag->derivation bag*)))
|
||
(if (gexp? exp)
|
||
(mlet %store-monad ((gexp (lower-gexp exp)))
|
||
(return (lowered-gexp-sexp gexp)))
|
||
(return exp)))))))
|
||
|
||
(run-hook before-print-hook phases)
|
||
(let ((column (port-column (current-output-port))))
|
||
(pretty-print-with-comments (current-output-port) phases
|
||
#:indent column)
|
||
(newline (current-output-port)))))
|
||
(_
|
||
(format #t ";; ERROR: This command only accepts package records.~%"))))
|
||
|
||
(define-meta-command ((phases guix) repl (form))
|
||
"phases
|
||
Return the build phases of the package defined by FORM."
|
||
(package-argument-command repl form #:phases #~%standard-phases))
|
||
|
||
(define-meta-command ((configure-flags guix) repl (form))
|
||
"configure-flags
|
||
Return the configure flags of the package defined by FORM."
|
||
(package-argument-command repl form #:configure-flags #~'()))
|
||
|
||
(define-meta-command ((make-flags guix) repl (form))
|
||
"make-flags
|
||
Return the make flags of the package defined by FORM."
|
||
(package-argument-command repl form #:make-flags #~'()))
|