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[bug#41790] [PATCH] Update emacs-direnv

From: Katherine Cox-Buday
Subject: [bug#41790] [PATCH] Update emacs-direnv
Date: Thu, 11 Jun 2020 09:44:35 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)

Oleg Pykhalov <> writes:

Heya Oleg, thanks for chiming in.

> Propagated inputs could lead to conflicts in a Guix profile.  The
> simplest example I could remember is - you want upgrade package ‘A’
> which propagates ‘direnv’, but you cannot because package ‘B’ propagates
> it too.  In this case you need to upgrade both ‘A’ and ‘B’ or delete ‘A’
> (or ‘B’).

Would there be a conflict if they both propagated the same input (in
this case the direnv binary)?

> Instead we could make the package functional by substituting in
> /gnu/store/…-emacs-direnv-…-checkout/direnv.el file ‘direnv--detect’
> ("Detect the direnv executable.") procedure which could return a path to
> ‘direnv’ binary as a string directly without calling ‘executable-find’.

In general, I like to keep packages as close to their source as
possible, but I'm slowly learning that this is not often the case when
packaging things (which is a shame and a risk in my opinion).

But all things considered, I think this is probably the right approach
here given the feedback I'm getting.

Here's a patch which should supersede the previous patch:

>From 52a5541b8a44c6629f6e2a6d3d47184f2ed5169b Mon Sep 17 00:00:00 2001
From: Katherine Cox-Buday <>
Date: Wed, 10 Jun 2020 10:09:48 -0500
Subject: [PATCH] gnu: emacs-direnv: Update to 2.1.0.

* gnu/packages/emacs-xyz.scm (emacs-direnv): Update to 2.1.0 and make direnv a
 gnu/packages/emacs-xyz.scm | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/emacs-xyz.scm b/gnu/packages/emacs-xyz.scm
index 946d01cba5..6eb5bc9d39 100644
--- a/gnu/packages/emacs-xyz.scm
+++ b/gnu/packages/emacs-xyz.scm
@@ -166,6 +166,7 @@
   #:use-module (gnu packages sphinx)
   #:use-module (gnu packages xdisorg)
   #:use-module (gnu packages shells)
+  #:use-module (gnu packages shellutils)
   #:use-module (gnu packages sqlite)
   #:use-module (gnu packages gnupg)
   #:use-module (gnu packages video)
@@ -2020,7 +2021,7 @@ Its features are:
 (define-public emacs-direnv
     (name "emacs-direnv")
-    (version "2.0.0")
+    (version "2.1.0")
        (method git-fetch)
@@ -2030,8 +2031,20 @@ Its features are:
        (file-name (git-file-name name version))
-         "005ibyzsx1fdyrl5iyhqpb1bg83mphzahq7zvw58x00syyqi2z49"))))
+         "0xkqn4604k2imas6azy1www56br8ls4iv9a44pxcd8h94j1fp44d"))))
     (build-system emacs-build-system)
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'patch-in-direnv
+           (lambda* (#:key inputs #:allow-other-keys)
+             (let* ((direnv-path (assoc-ref inputs "direnv"))
+                    (direnv-bin (string-append
+                                 "\"" direnv-path "/bin/direnv\"")))
+               (substitute* "direnv.el"
+                 (("\"direnv\"") direnv-bin))))))))
+    (inputs
+     `(("direnv" ,direnv)))
      `(("dash" ,emacs-dash)
        ("with-editor" ,emacs-with-editor)))

Thank you both for your thoughtful reviews!


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