GNU bug report logs - #42000
[PATCH] gnu: Add drip.

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From: Pierre Neidhardt <mail <at> ambrevar.xyz>
To: 42000 <at> debbugs.gnu.org
Subject: [bug#42000] [PATCH] gnu: Add drip.
Date: Mon, 22 Jun 2020 11:31:54 +0200

* gnu/packages/java.scm (drip): New variable.
---
 gnu/packages/java.scm | 52 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/gnu/packages/java.scm b/gnu/packages/java.scm
index d5bc713c70..d4bb88cf49 100644
--- a/gnu/packages/java.scm
+++ b/gnu/packages/java.scm
@@ -165,6 +165,58 @@ defined in The Java Language Specification into the bytecoded instruction set
 and binary format defined in The Java Virtual Machine Specification.")
     (license license:ibmpl1.0)))
 
+(define-public drip
+  ;; Last release is from 2014, with few important commits afterwards.
+  (let ((commit "a4bd00df0199e78243847f06cc04ecaea31f8f08"))
+    (package
+      (name "drip")
+      (version (git-version "0.2.4" "1" commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/ninjudd/drip")
+                      (commit commit)))
+                (file-name (git-file-name name version))
+                (sha256
+                 (base32
+                  "0wzmjwfyldr3jn49517xd8yn7dgdk8h88qkga3kjyg1zc375ylg2"))))
+      (build-system gnu-build-system)
+      (native-inputs
+       `(("jdk" ,icedtea "jdk")))
+      (arguments
+       `(#:tests? #f                    ; No tests.
+         #:phases
+         (modify-phases %standard-phases
+           (delete 'configure)
+           (add-before 'install 'fix-wrapper
+             (lambda* (#:key inputs #:allow-other-keys)
+               (let ((jps (string-append (assoc-ref inputs "jdk") "/bin/jps")))
+                 (substitute* "bin/drip"
+                   (("jps") jps)
+                   (("brew update && brew upgrade drip") "guix pull && guix install drip")
+                   ;; No need to make:
+                   (("\\(cd -- \"\\$drip_dir\" && make -s\\) \\|\\| exit 1") "")
+                   ;; No need to include source:
+                   (("\\[\\[ -r \\$drip_dir/src/org/flatland/drip/Main\\.java \\]\\]")
+                    "true")))))
+           (replace 'install
+             (lambda* (#:key outputs #:allow-other-keys)
+               (let* ((out (assoc-ref outputs "out"))
+                      (bin (string-append out "/bin")))
+                 (mkdir-p bin)
+                 (for-each
+                  (lambda (file)
+                    (install-file (string-append "bin/" file) bin))
+                  '("drip" "drip_daemon" "drip_proxy"))
+                 (install-file "drip.jar" out)))))))
+      (home-page "https://github.com/ninjudd/drip")
+      (synopsis "Fast Java Virtual Machine launching")
+      (description "Drip is a launcher for the Java Virtual Machine that
+provides much faster startup times than the java command.  The @command{drip}
+script is intended to be a drop-in replacement for the @command{java} command,
+only faster.")
+      (license license:epl1.0))))
+
 ;; This is the last version of GNU Classpath that can be built without ECJ.
 (define classpath-bootstrap
   (package
-- 
2.26.2

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