pre-inst-env: Add pre-installation environment script.

* pre-inst-env: New file.

1 files changed, 40 insertions, 0 deletions

diff --git a/pre-inst-env b/pre-inst-env
new file mode 100755
index 0000000..27803eb
--- /dev/null
+++ b/pre-inst-env
@@ -0,0 +1,40 @@
+#!/usr/bin/env sh
+exec guile --no-auto-compile -s "$0" "$@"
+!#
+
+;;; tissue --- Text based issue tracker
+;;; Copyright © 2022 Arun Isaac <arunisaac@systemreboot.net>
+;;;
+;;; This file is part of tissue.
+;;;
+;;; tissue is free software: you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation, either version 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; tissue is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;; General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with tissue.  If not, see <https://www.gnu.org/licenses/>.
+
+(import (ice-9 match))
+
+(define (prepend-path-environment! name . values)
+  (setenv name (string-join (append values
+                                    (if (getenv name)
+                                        (string-split (getenv name) #\:)
+                                        '()))
+                            ":")))
+
+(define %source-dir (dirname (current-filename)))
+
+(prepend-path-environment! "GUILE_LOAD_PATH" %source-dir)
+(prepend-path-environment! "GUILE_LOAD_COMPILED_PATH" %source-dir)
+(prepend-path-environment! "PATH" (string-append %source-dir "/bin"))
+
+(match (command-line)
+  ((_ command args ...)
+   (apply execlp command command args)))