--- Begin Message ---
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Subject: |
[PATCH] build/cargo-build-system: Make cargo-build-system install working packages. |
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Date: |
Fri, 3 Mar 2017 20:50:47 +0100 |
* guix/build/cargo-build-system.scm (configure): Remove proprietary
dependencies. Add rust dependencies and configure Cargo to find them.
(build): Also build libraries, not just applications.
(file-sha256): New variable.
(generate-checksums): New variable. Export it.
(touch): New variable.
(install): Generate checksums so Cargo accepts the package.
---
guix/build/cargo-build-system.scm | 116 +++++++++++++++++++++++++++++++-------
1 file changed, 95 insertions(+), 21 deletions(-)
diff --git a/guix/build/cargo-build-system.scm
b/guix/build/cargo-build-system.scm
index 7d656a8d5..f11d85874 100644
--- a/guix/build/cargo-build-system.scm
+++ b/guix/build/cargo-build-system.scm
@@ -19,13 +19,16 @@
(define-module (guix build cargo-build-system)
#:use-module ((guix build gnu-build-system) #:prefix gnu:)
#:use-module (guix build utils)
+ #:use-module (ice-9 popen)
+ #:use-module (ice-9 rdelim)
#:use-module (ice-9 ftw)
#:use-module (ice-9 format)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:export (%standard-phases
- cargo-build))
+ cargo-build
+ generate-checksums))
;; Commentary:
;;
@@ -45,27 +48,57 @@
"Replace Cargo.toml [dependencies] section with guix inputs."
;; Make sure Cargo.toml is writeable when the crate uses git-fetch.
(chmod "Cargo.toml" #o644)
- (let ((port (open-file "Cargo.toml" "a" #:encoding "utf-8")))
- (format port "~%[replace]~%")
- (for-each
- (match-lambda
- ((name . path)
- (let ((crate (package-name->crate-name name)))
- (when (and crate path)
- (match (string-split (basename path) #\-)
- ((_ ... version)
- (format port "\"~a:~a\" = { path = \"~a/share/rust-source\" }~%"
- crate version path)))))))
- inputs)
- (close-port port))
+ (chmod "." #o755)
+ (if (not (file-exists? "vendor"))
+ (if (not (file-exists? "Cargo.lock"))
+ (begin
+ (substitute* "Cargo.toml"
+ ((".*32-sys.*") "
+")
+ ((".*winapi.*") "
+")
+ ((".*core-foundation.*") "
+"))
+ ;; Prepare one new directory with all the required dependencies.
+ ;; It's necessary to do this (instead of just using /gnu/store as the
+ ;; directory) because we want to hide the libraries in subdirectories
+ ;; share/rust-source/... instead of polluting the user's profile
root.
+ (mkdir "vendor")
+ (for-each
+ (match-lambda
+ ((name . path)
+ (let ((crate (package-name->crate-name name)))
+ (when (and crate path)
+ (match (string-split (basename path) #\-)
+ ((_ ... version)
+ (symlink (string-append path "/share/rust-source")
+ (string-append "vendor/" (basename path)))))))))
+ inputs)
+ ;; Configure cargo to actually use this new directory.
+ (mkdir-p ".cargo")
+ (let ((port (open-file ".cargo/config" "w" #:encoding "utf-8")))
+ (display "
+[source.crates-io]
+registry = 'https://github.com/rust-lang/crates.io-index'
+replace-with = 'vendored-sources'
+
+[source.vendored-sources]
+directory = '" port)
+ (display (getcwd) port)
+ (display "/vendor" port)
+ (display "'
+" port)
+ (close-port port)))))
+ (setenv "CC" (string-append (assoc-ref inputs "gcc") "/bin/gcc"))
+
+ ;(setenv "CARGO_HOME" "/gnu/store")
+ ; (setenv "CMAKE_C_COMPILER" cc)
#t)
-(define* (build #:key (cargo-build-flags '("--release" "--frozen"))
+(define* (build #:key (cargo-build-flags '("--release"))
#:allow-other-keys)
"Build a given Cargo package."
- (if (file-exists? "Cargo.lock")
- (zero? (apply system* `("cargo" "build" ,@cargo-build-flags)))
- #t))
+ (zero? (apply system* `("cargo" "build" ,@cargo-build-flags))))
(define* (check #:key tests? #:allow-other-keys)
"Run tests for a given Cargo package."
@@ -73,6 +106,44 @@
(zero? (system* "cargo" "test"))
#t))
+(define (file-sha256 file-name)
+ "Calculate the hexdigest of the sha256 checksum of FILE-NAME and return it."
+ (let ((port (open-pipe* OPEN_READ
+ "sha256sum"
+ "--"
+ file-name)))
+ (let ((result (read-delimited " " port)))
+ (close-pipe port)
+ result)))
+
+;; Example dir-name:
"/gnu/store/hwlr49riz3la33m6in2n898ly045ylld-rust-rand-0.3.15".
+(define (generate-checksums dir-name src-name)
+ "Given DIR-NAME, checksum all the files in it one by one and put the
+ result into the file \".cargo-checksum.json\" in the same directory.
+ Also includes the checksum of an extra file SRC-NAME as if it was
+ part of the directory DIR-NAME with name \"package\"."
+ (let* ((file-names (find-files dir-name "."))
+ (dir-prefix-name (string-append dir-name "/"))
+ (dir-prefix-name-len (string-length dir-prefix-name))
+ (checksums-file-name (string-append dir-name
"/.cargo-checksum.json")))
+ (call-with-output-file checksums-file-name
+ (lambda (port)
+ (display "{\"files\":{" port)
+ (let ((sep ""))
+ (for-each (lambda (file-name)
+ (let ((file-relative-name (string-drop file-name
dir-prefix-name-len)))
+ (display sep port)
+ (set! sep ",")
+ (write file-relative-name port)
+ (display ":" port)
+ (write (file-sha256 file-name) port))) file-names))
+ (display "},\"package\":" port)
+ (write (file-sha256 src-name) port)
+ (display "}" port)))))
+
+(define (touch file-name)
+ (call-with-output-file file-name (const #t)))
+
(define* (install #:key inputs outputs #:allow-other-keys)
"Install a given Cargo package."
(let* ((out (assoc-ref outputs "out"))
@@ -86,16 +157,19 @@
;; distributing crates as source and replacing
;; references in Cargo.toml with store paths.
(copy-recursively "src" (string-append rsrc "/src"))
+ (touch (string-append rsrc "/.cargo-ok"))
+ (generate-checksums rsrc src)
(install-file "Cargo.toml" rsrc)
;; When the package includes executables we install
;; it using cargo install. This fails when the crate
;; doesn't contain an executable.
(if (file-exists? "Cargo.lock")
- (system* "cargo" "install" "--root" out)
- (mkdir out))))
+ (zero? (system* "cargo" "install" "--root" out))
+ (begin
+ (mkdir out)
+ #t))))
(define %standard-phases
- ;; 'configure' phase is not needed.
(modify-phases gnu:%standard-phases
(replace 'configure configure)
(replace 'build build)
--- End Message ---