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import: hackage: Support recursive importing. 

* guix/import/hackage.scm (hackage-recursive-import): New procedure.
(hackage-module->sexp): Return dependencies alongside dependencies.
(hackage->guix-package): Memoize results.
* guix/scripts/import/hackage.scm (show-help, %options, guix-import-hackage):
Support recursive importing.
* doc/guix.texi (Invoking guix import): Document option.
This commit is contained in:
Ricardo Wurmus 2018-08-08 15:29:18 +02:00 committed by Ricardo Wurmus
parent 424fd76828
commit a928596162
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3 changed files with 102 additions and 64 deletions
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5
doc/guix.texi
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@ -6661,6 +6661,11 @@ The value associated with a flag has to be either the symbol
has to conform to the Cabal file format definition. The default value
associated with the keys @code{os}, @code{arch} and @code{impl} is
@samp{linux}, @samp{x86_64} and @samp{ghc}, respectively.
@item --recursive
@itemx -r
Traverse the dependency graph of the given upstream package recursively
and generate package expressions for all those packages that are not yet
in Guix.
@end table
The command below imports metadata for the latest version of the

124
guix/import/hackage.scm
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@ -30,15 +30,17 @@
#:use-module ((guix utils) #:select (package-name->name+version
canonical-newline-port))
#:use-module (guix http-client)
#:use-module ((guix import utils) #:select (factorize-uri))
#:use-module ((guix import utils) #:select (factorize-uri recursive-import))
#:use-module (guix import cabal)
#:use-module (guix store)
#:use-module (guix hash)
#:use-module (guix base32)
#:use-module (guix memoization)
#:use-module (guix upstream)
#:use-module (guix packages)
#:use-module ((guix utils) #:select (call-with-temporary-output-file))
#:export (hackage->guix-package
hackage-recursive-import
%hackage-updater
guix-package->hackage-name
@ -205,32 +207,34 @@ representation of a Cabal file as produced by 'read-cabal'."
(define source-url
(hackage-source-url name version))
(define hackage-dependencies
((compose (cut filter-dependencies <>
(cabal-package-name cabal))
(cut cabal-dependencies->names <>))
cabal))
(define hackage-native-dependencies
((compose (cut filter-dependencies <>
(cabal-package-name cabal))
;; FIXME: Check include-test-dependencies?
(lambda (cabal)
(append (if include-test-dependencies?
(cabal-test-dependencies->names cabal)
'())
(cabal-custom-setup-dependencies->names cabal))))
cabal))
(define dependencies
(let ((names
(map hackage-name->package-name
((compose (cut filter-dependencies <>
(cabal-package-name cabal))
(cut cabal-dependencies->names <>))
cabal))))
(map (lambda (name)
(list name (list 'unquote (string->symbol name))))
names)))
(map (lambda (name)
(list name (list 'unquote (string->symbol name))))
(map hackage-name->package-name
hackage-dependencies)))
(define native-dependencies
(let ((names
(map hackage-name->package-name
((compose (cut filter-dependencies <>
(cabal-package-name cabal))
;; FIXME: Check include-test-dependencies?
(lambda (cabal)
(append (if include-test-dependencies?
(cabal-test-dependencies->names cabal)
'())
(cabal-custom-setup-dependencies->names cabal))))
cabal))))
(map (lambda (name)
(list name (list 'unquote (string->symbol name))))
names)))
(map (lambda (name)
(list name (list 'unquote (string->symbol name))))
(map hackage-name->package-name
hackage-native-dependencies)))
(define (maybe-inputs input-type inputs)
(match inputs
@ -247,31 +251,35 @@ representation of a Cabal file as produced by 'read-cabal'."
(let ((tarball (with-store store
(download-to-store store source-url))))
`(package
(name ,(hackage-name->package-name name))
(version ,version)
(source (origin
(method url-fetch)
(uri (string-append ,@(factorize-uri source-url version)))
(sha256
(base32
,(if tarball
(bytevector->nix-base32-string (file-sha256 tarball))
"failed to download tar archive")))))
(build-system haskell-build-system)
,@(maybe-inputs 'inputs dependencies)
,@(maybe-inputs 'native-inputs native-dependencies)
,@(maybe-arguments)
(home-page ,(cabal-package-home-page cabal))
(synopsis ,(cabal-package-synopsis cabal))
(description ,(cabal-package-description cabal))
(license ,(string->license (cabal-package-license cabal))))))
(values
`(package
(name ,(hackage-name->package-name name))
(version ,version)
(source (origin
(method url-fetch)
(uri (string-append ,@(factorize-uri source-url version)))
(sha256
(base32
,(if tarball
(bytevector->nix-base32-string (file-sha256 tarball))
"failed to download tar archive")))))
(build-system haskell-build-system)
,@(maybe-inputs 'inputs dependencies)
,@(maybe-inputs 'native-inputs native-dependencies)
,@(maybe-arguments)
(home-page ,(cabal-package-home-page cabal))
(synopsis ,(cabal-package-synopsis cabal))
(description ,(cabal-package-description cabal))
(license ,(string->license (cabal-package-license cabal))))
(append hackage-dependencies hackage-native-dependencies))))
(define* (hackage->guix-package package-name #:key
(include-test-dependencies? #t)
(port #f)
(cabal-environment '()))
"Fetch the Cabal file for PACKAGE-NAME from hackage.haskell.org, or, if the
(define hackage->guix-package
(memoize
(lambda* (package-name #:key
(include-test-dependencies? #t)
(port #f)
(cabal-environment '()))
"Fetch the Cabal file for PACKAGE-NAME from hackage.haskell.org, or, if the
called with keyword parameter PORT, from PORT. Return the `package'
S-expression corresponding to that package, or #f on failure.
CABAL-ENVIRONMENT is an alist defining the environment in which the Cabal
@ -281,13 +289,19 @@ symbol 'true' or 'false'. The value associated with other keys has to conform
to the Cabal file format definition. The default value associated with the
keys \"os\", \"arch\" and \"impl\" is \"linux\", \"x86_64\" and \"ghc\"
respectively."
(let ((cabal-meta (if port
(read-cabal (canonical-newline-port port))
(hackage-fetch package-name))))
(and=> cabal-meta (compose (cut hackage-module->sexp <>
#:include-test-dependencies?
include-test-dependencies?)
(cut eval-cabal <> cabal-environment)))))
(let ((cabal-meta (if port
(read-cabal (canonical-newline-port port))
(hackage-fetch package-name))))
(and=> cabal-meta (compose (cut hackage-module->sexp <>
#:include-test-dependencies?
include-test-dependencies?)
(cut eval-cabal <> cabal-environment)))))))
(define* (hackage-recursive-import package-name . args)
(recursive-import package-name #f
#:repo->guix-package (lambda (name repo)
(apply hackage->guix-package (cons name args)))
#:guix-name hackage-name->package-name))
(define (hackage-package? package)
"Return #t if PACKAGE is a Haskell package from Hackage."

37
guix/scripts/import/hackage.scm
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@ -1,5 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch>
;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
;;;
;;; This file is part of GNU Guix.
;;;
@ -26,6 +27,7 @@
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-37)
#:use-module (srfi srfi-41)
#:use-module (ice-9 match)
#:use-module (ice-9 format)
#:export (guix-import-hackage))
@ -57,6 +59,8 @@ version.\n"))
(display (G_ "
-h, --help display this help and exit"))
(display (G_ "
-r, --recursive import packages recursively"))
(display (G_ "
-s, --stdin read from standard input"))
(display (G_ "
-t, --no-test-dependencies don't include test-only dependencies"))
@ -89,6 +93,9 @@ version.\n"))
(alist-cons 'cabal-environment (read/eval arg)
(alist-delete 'cabal-environment
result))))
(option '(#\r "recursive") #f #f
(lambda (opt name arg result)
(alist-cons 'recursive #t result)))
%standard-import-options))
@ -107,15 +114,27 @@ version.\n"))
%default-options))
(define (run-importer package-name opts error-fn)
(let ((sexp (hackage->guix-package
package-name
#:include-test-dependencies?
(assoc-ref opts 'include-test-dependencies?)
#:port (if (assoc-ref opts 'read-from-stdin?)
(current-input-port)
#f)
#:cabal-environment
(assoc-ref opts 'cabal-environment))))
(let* ((arguments (list
package-name
#:include-test-dependencies?
(assoc-ref opts 'include-test-dependencies?)
#:port (if (assoc-ref opts 'read-from-stdin?)
(current-input-port)
#f)
#:cabal-environment
(assoc-ref opts 'cabal-environment)))
(sexp (if (assoc-ref opts 'recursive)
;; Recursive import
(map (match-lambda
((and ('package ('name name) . rest) pkg)
`(define-public ,(string->symbol name)
,pkg))
(_ #f))
(reverse
(stream->list
(apply hackage-recursive-import arguments))))
;; Single import
(apply hackage->guix-package arguments))))
(unless sexp (error-fn))
sexp))