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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Robert Vollmert <rob@vllmrt.net>
;;; Copyright © 2022 Philip McGrath <philip@philipmcgrath.com>
;;;
;;; 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 (gnu packages elm)
#:use-module (gnu packages)
#:use-module (gnu packages haskell)
#:use-module (gnu packages haskell-check)
#:use-module (gnu packages haskell-crypto)
#:use-module (gnu packages haskell-xyz)
#:use-module (gnu packages haskell-web)
#:use-module (guix build-system haskell)
#:use-module (guix gexp)
#:use-module (guix git-download)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix packages))
;; The `elm` build usually calls out to itself via Template Haskell to compile
;; the `elm reactor` web app (which depends on additional Elm packages) and
;; embeds the static files into itself. The reactor isn't required to compile
;; Elm applications, so we want to skip it for the bootstrap package, but we
;; also want to be able to enable it once we can build it. We patch Elm to
;; instead look for the files on disk relative to the executable and to have
;; `elm reactor` exit with a useful error message if they aren't there.
(define %reactor-root-base
"share/elm/reactor-")
(define-public elm-compiler
(package
(name "elm-compiler")
(version "0.19.1")
(source
(origin
(method git-fetch)
(file-name (git-file-name name version))
(uri (git-reference
(url "https://github.com/elm/compiler/")
(commit version)))
(sha256
(base32 "1rdg3xp3js9xadclk3cdypkscm5wahgsfmm4ldcw3xswzhw6ri8w"))
(patches
(search-patches "elm-reactor-static-files.patch"))))
(build-system haskell-build-system)
(arguments
(list
#:configure-flags
#~(list (string-append "--ghc-option=-DGUIX_REACTOR_STATIC_REL_ROOT="
"\"../" #$%reactor-root-base
#$(package-version this-package)
"\""))
#:phases
#~(modify-phases %standard-phases
(add-before 'configure 'update-constraints
(lambda _
(substitute* "elm.cabal"
(("(ansi-terminal|containers|network|http-client|language-glsl)\\s+[^,]+" all dep)
dep)))))))
(inputs
(list ghc-ansi-terminal
ghc-ansi-wl-pprint
ghc-edit-distance
ghc-filelock
ghc-http
ghc-http-client
ghc-http-client-tls
ghc-http-types
ghc-language-glsl
ghc-logict
ghc-network
ghc-raw-strings-qq
ghc-scientific
ghc-sha
ghc-snap-core
ghc-snap-server
ghc-unordered-containers
ghc-utf8-string
ghc-vector
ghc-zip-archive))
(home-page "https://elm-lang.org")
(synopsis "Programming language for Web applications")
(description
"This package provides Elm, a statically-typed functional programming
language for the browser. It includes commands for developers such as
@command{elm make} and @command{elm repl}.")
(license license:bsd-3)))
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