gnu: chez: Add utilities for Chez machine types.
* gnu/packages/chez.scm (chez-machine->nonthreaded) (chez-machine->threaded, chez-machine->nix-system) (nix-system->chez-machine, chez-upstream-features-for-system) (%nix-arch-to-chez-alist, %nix-os-to-chez-alist): New variables. (chez-scheme)[supported-systems]: Compute based on 'nix-system->chez-machine' and 'chez-upstream-features-for-system'. (chez-scheme-for-racket-bootstrap-bootfiles)[supported-systems]: Compute based on 'nix-system->chez-machine'. Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>
This commit is contained in:
Philip McGrath
Liliana Marie Prikler
parent
df00c01d94
commit
f5a73d1747
@ -44,7 +44,119 @@
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#:use-module (gnu packages image)
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#:use-module (gnu packages xorg)
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#:use-module (ice-9 match)
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#:use-module (srfi srfi-1))
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#:use-module (srfi srfi-1)
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#:export (nix-system->chez-machine
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chez-machine->nonthreaded
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chez-machine->threaded))
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(define (chez-machine->nonthreaded machine)
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"Given a string MACHINE naming a Chez Scheme machine type, returns a string
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naming the nonthreaded machine type for the same architecture and OS as
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MACHINE. The returned string may share storage with MACHINE."
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;; Chez Scheme documentation consistently uses "nonthreaded" rather than
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;; e.g. "unthreaded"
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(if (eqv? #\t (string-ref machine 0))
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(substring machine 1)
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machine))
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(define (chez-machine->threaded machine)
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"Like @code{chez-machine->nonthreaded}, but returns the threaded machine
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type."
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(if (eqv? #\t (string-ref machine 0))
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machine
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(string-append "t" machine)))
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;; Based on the implementation from raco-cross-lib/private/cross/platform.rkt
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;; in https://github.com/racket/raco-cross.
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;; For supported platforms, refer to release_notes/release_notes.stex in the
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;; upstream Chez Scheme repository or to racket/src/ChezScheme/README.md
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;; in https://github.com/racket/racket.
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(define %nix-arch-to-chez-alist
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`(("x86_64" . "a6")
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("i386" . "i3")
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("aarch64" . "arm64")
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("armhf" . "arm32") ;; Chez supports ARM v6+
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("ppc" . "ppc32")))
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(define %nix-os-to-chez-alist
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`(("w64-mingw32" . "nt")
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("darwin" . "osx")
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("linux" . "le")
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("freebsd" . "fb")
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("openbsd" . "ob")
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("netbsd" . "nb")
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("solaris" . "s2")))
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(define (chez-machine->nix-system machine)
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"Return the Nix system type corresponding to the Chez Scheme machine type
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MACHINE. If MACHINE is not a string representing a known machine type, an
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exception is raised. This function does not distinguish between threaded and
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nonthreaded variants of MACHINE.
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Note that this function only handles Chez Scheme machine types in the
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strictest sense, not other kinds of descriptors sometimes used in place of a
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Chez Scheme machine type by Racket, such as @code{\"pb\"}, @code{#f}, or
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@code{\"racket\"}. (When using such extensions, the Chez Scheme machine type
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for the host system is often still relevant.)"
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(let ((machine (chez-machine->nonthreaded machine)))
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(let find-arch ((alist %nix-arch-to-chez-alist))
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(match alist
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(((nix . chez) . alist)
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(if (string-prefix? chez machine)
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(string-append
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nix "-" (let ((machine-os
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(substring machine (string-length chez))))
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(let find-os ((alist %nix-os-to-chez-alist))
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(match alist
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(((nix . chez) . alist)
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(if (equal? chez machine-os)
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nix
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(find-os alist)))))))
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(find-arch alist)))))))
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(define* (nix-system->chez-machine #:optional
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(system (or (%current-target-system)
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(%current-system))))
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"Return the Chez Scheme machine type corresponding to the Nix system
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identifier SYSTEM, or @code{#f} if the translation of SYSTEM to a Chez Scheme
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machine type is undefined.
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It is unspecified whether the resulting string will name a threaded or a
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nonthreaded machine type: when the distinction is relevant, use
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@code{chez-machine->nonthreaded} or @code{chez-machine->threaded} to adjust
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the result."
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(let* ((hyphen (string-index system #\-))
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(nix-arch (substring system 0 hyphen))
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(nix-os (substring system (+ 1 hyphen)))
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(chez-arch (assoc-ref %nix-arch-to-chez-alist nix-arch))
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(chez-os (assoc-ref %nix-os-to-chez-alist nix-os)))
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(and chez-arch chez-os (string-append chez-arch chez-os))))
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(define* (chez-upstream-features-for-system #:optional
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(system
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(or (%current-target-system)
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(%current-system))))
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"Return a list of symbols naming features supported by upstream Chez Scheme
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for the Nix system identifier SYSTEM, or @code{#f} if upstream Chez Scheme
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does not support SYSTEM at all.
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If native threads are supported, the returned list will include
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@code{'threads}. Other feature symbols may be added in the future."
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(cond
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((not (nix-system->chez-machine system))
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#f)
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((target-aarch64? system)
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#f)
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((target-arm32? system)
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(and (target-linux? system)
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'()))
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((target-ppc32? system)
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(and (target-linux? system)
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'(threads)))
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(else
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'(threads))))
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;;
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;; Chez Scheme:
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;;
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(define nanopass
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(let ((version "1.9.2"))
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@ -251,8 +363,11 @@
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;; We should too. It is the Chez machine type arm32le
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;; (no threaded version upstream yet, though there is in
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;; Racket's fork), more specifically (per the release notes) ARMv6.
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(supported-systems (fold delete %supported-systems
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'("mips64el-linux" "armhf-linux")))
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(supported-systems
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(delete
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"armhf-linux" ;; <-- should work, but reportedly broken
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(filter chez-upstream-features-for-system
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%supported-systems)))
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(home-page "https://cisco.github.io/ChezScheme/")
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(synopsis "R6RS Scheme compiler and run-time")
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(description
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@ -300,6 +415,8 @@ and 32-bit PowerPC architectures.")
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(invoke (search-input-file (or native-inputs inputs)
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"/opt/racket-vm/bin/racket")
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"rktboot/main.rkt")))))))
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(supported-systems (filter nix-system->chez-machine
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%supported-systems))
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(home-page "https://github.com/racket/ChezScheme")
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;; ^ This is downstream of https://github.com/racket/racket,
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;; but it's designed to be a friendly landing place for people
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@ -322,6 +439,10 @@ Scheme, and @code{cs-bootstrap} does not currently support building upstream
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Chez Scheme.")
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(license (list asl2.0))))
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;;
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;; Packages:
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;;
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(define-public chez-srfi
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(package
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(name "chez-srfi")
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