1 files changed, 57 insertions, 0 deletions
diff --git a/modules/freya/packages/yarn.scm b/modules/freya/packages/yarn.scm
new file mode 100644
index 0000000..dad667d
--- /dev/null
+++ b/modules/freya/packages/yarn.scm
@@ -0,0 +1,57 @@
+(define-module (freya packages yarn)
+	#:use-module (guix packages)
+	#:use-module (guix download)
+	#:use-module (guix build-system gnu)
+	#:use-module ((guix licenses) #:prefix license:)
+	#:use-module (guix utils)
+	#:use-module (gnu packages node))
+
+(define-public yarn
+  (package
+    (name "yarn")
+    (version "1.22.22")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "https://github.com/yarnpkg/yarn/releases/download/v"
+             version
+             "/yarn-v"
+             version
+             ".tar.gz"))
+       (sha256
+        (base32
+         "181nvynhhrbga3c209v8cd9psk6lqjkc1s9wyzy125lx35j889l8"))))
+    (build-system gnu-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (delete 'configure)
+         (delete 'check)
+         (delete 'build)
+         (replace 'install
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let* ((out               (assoc-ref %outputs "out"))
+                    (bin               (string-append out "/bin"))
+                    (libexec-yarn      (string-append out "/libexec/yarn"))
+                    (yarn-js           (string-append libexec-yarn "/bin/yarn.js")))
+               (mkdir-p bin)
+               (mkdir-p libexec-yarn)
+               (copy-recursively "./" libexec-yarn)
+               (symlink yarn-js (string-append bin "/yarn"))
+               (symlink yarn-js (string-append bin "/yarnpkg"))))))))
+
+    (inputs `(("node" ,node-lts)))
+    (synopsis "Fast, reliable, and secure dependency management")
+    (description
+     "Yarn is a fast, reliable, and secure dependency management.  Fast: Yarn
+caches every package it has downloaded, so it never needs to download the
+same package again.  It also does almost everything concurrently to maximize
+resource utilization.  This means even faster installs.  Reliable: Using a
+detailed but concise lockfile format and a deterministic algorithm for install
+operations, Yarn is able to guarantee that any installation that works on one
+system will work exactly the same on another system.
+Secure: Yarn uses checksums to verify the integrity of every installed package
+before its code is executed.")
+    (license license:bsd-2)
+    (home-page "https://yarnpkg.com")))