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b9b86078 | 1 | ;;; GNU Guix --- Functional package management for GNU |
4ce7f1fb | 2 | ;;; Copyright © 2014, 2015, 2016, 2022 Ludovic Courtès <ludo@gnu.org> |
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3 | ;;; |
4 | ;;; This file is part of GNU Guix. | |
5 | ;;; | |
6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
7 | ;;; under the terms of the GNU General Public License as published by | |
8 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
9 | ;;; your option) any later version. | |
10 | ;;; | |
11 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;; GNU General Public License for more details. | |
15 | ;;; | |
16 | ;;; You should have received a copy of the GNU General Public License | |
17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
18 | ||
19 | (define-module (guix monad-repl) | |
20 | #:use-module (guix store) | |
21 | #:use-module (guix monads) | |
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22 | #:use-module (guix utils) |
23 | #:use-module (guix packages) | |
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24 | #:use-module (guix status) |
25 | #:autoload (guix gexp) (lower-object) | |
26 | #:use-module ((guix derivations) | |
27 | #:select (derivation? | |
28 | derivation->output-paths built-derivations)) | |
29 | #:use-module (ice-9 match) | |
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30 | #:use-module (ice-9 pretty-print) |
31 | #:use-module (system repl repl) | |
32 | #:use-module (system repl common) | |
33 | #:use-module (system repl command) | |
34 | #:use-module (system base language) | |
35 | #:use-module (system base compile) | |
36 | #:use-module (srfi srfi-26) | |
37 | #:export (run-in-store | |
38 | enter-store-monad)) | |
39 | ||
40 | ;;; Comment: | |
41 | ;;; | |
42 | ;;; This modules provides a couple of REPL meta-commands that make it easier | |
43 | ;;; to work with monadic procedures in the store monad. | |
44 | ;;; | |
45 | ;;; Code: | |
46 | ||
47 | (define* (monad-language monad run #:optional (name 'monad)) | |
48 | "Return a language with a special evaluator that causes monadic values | |
49 | to be \"run\" in MONAD using procedure RUN." | |
50 | (let ((scheme (lookup-language 'scheme))) | |
51 | (define (evaluate-monadic-expression exp env) | |
52 | (let ((mvalue (compile exp #:to 'value #:env env))) | |
53 | (run mvalue))) | |
54 | ||
55 | (make-language #:name name | |
56 | #:title "Monad" | |
57 | #:reader (language-reader scheme) | |
58 | #:compilers (language-compilers scheme) | |
59 | #:decompilers (language-decompilers scheme) | |
60 | #:evaluator evaluate-monadic-expression | |
61 | #:printer (language-printer scheme) | |
62 | #:make-default-environment | |
63 | (language-make-default-environment scheme)))) | |
64 | ||
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65 | (define* (default-guile-derivation store #:optional (system (%current-system))) |
66 | "Return the derivation of the default " | |
67 | (package-derivation store (default-guile) system)) | |
68 | ||
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69 | (define (store-monad-language store) |
70 | "Return a compiler language for the store monad using STORE." | |
71 | (let ((guile (or (%guile-for-build) | |
72 | (default-guile-derivation store)))) | |
b9b86078 | 73 | (monad-language %store-monad |
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74 | (cut run-with-store store <> |
75 | #:guile-for-build guile) | |
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76 | 'store-monad))) |
77 | ||
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78 | (define %build-verbosity |
79 | ;; Current build verbosity level. | |
80 | 1) | |
81 | ||
82 | (define* (evaluate/print-with-store mvalue #:key build?) | |
83 | "Run monadic value MVALUE in the store monad and print its value." | |
84 | (with-store store | |
85 | (set-build-options store | |
86 | #:print-build-trace #t | |
87 | #:print-extended-build-trace? #t | |
88 | #:multiplexed-build-output? #t) | |
89 | (with-status-verbosity %build-verbosity | |
90 | (let* ((guile (or (%guile-for-build) | |
91 | (default-guile-derivation store))) | |
92 | (values (run-with-store store | |
93 | (if build? | |
94 | (mlet %store-monad ((obj mvalue)) | |
95 | (if (derivation? obj) | |
96 | (mbegin %store-monad | |
97 | (built-derivations (list obj)) | |
98 | (return | |
99 | (match (derivation->output-paths obj) | |
100 | (((_ . files) ...) files)))) | |
101 | (return (list obj)))) | |
102 | (mlet %store-monad ((obj mvalue)) | |
103 | (return (list obj)))) | |
104 | #:guile-for-build guile))) | |
105 | (for-each (lambda (value) | |
106 | (run-hook before-print-hook value) | |
107 | (pretty-print value)) | |
108 | values))))) | |
109 | ||
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110 | (define-meta-command ((run-in-store guix) repl (form)) |
111 | "run-in-store EXP | |
112 | Run EXP through the store monad." | |
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113 | (evaluate/print-with-store (repl-eval repl form))) |
114 | ||
115 | (define-meta-command ((verbosity guix) repl (level)) | |
116 | "verbosity LEVEL | |
117 | Change build verbosity to LEVEL." | |
118 | (set! %build-verbosity (repl-eval repl level))) | |
119 | ||
120 | (define-meta-command ((lower guix) repl (form)) | |
121 | "lower OBJECT | |
122 | Lower OBJECT into a derivation or store file and return it." | |
123 | (evaluate/print-with-store (lower-object (repl-eval repl form)))) | |
124 | ||
125 | (define-meta-command ((build guix) repl (form)) | |
126 | "build OBJECT | |
127 | Lower OBJECT and build it, returning its output file name(s)." | |
128 | (evaluate/print-with-store (lower-object (repl-eval repl form)) | |
129 | #:build? #t)) | |
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130 | |
131 | (define-meta-command ((enter-store-monad guix) repl) | |
132 | "enter-store-monad | |
133 | Enter a REPL for values in the store monad." | |
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134 | (with-store store |
135 | (let ((new (make-repl (store-monad-language store)))) | |
136 | ;; Force interpretation so that our specially-crafted language evaluator | |
137 | ;; is actually used. | |
138 | (repl-option-set! new 'interp #t) | |
139 | (run-repl new)))) | |
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140 | |
141 | ;;; monad-repl.scm ends here |