nixpkgs/pkgs/applications/networking/mailreaders/aerc/runtime-sharedir.patch

From 6cf3c2e42d219b9665a43ca65f321c653b0aa102 Mon Sep 17 00:00:00 2001
From: Tadeo Kondrak <me@tadeo.ca>
Date: Mon, 28 Oct 2019 08:36:36 -0600
Subject: [PATCH] Fix aerc breaking every time the package is rebuilt.

On NixOS, the SHAREDIR changes on every rebuild to the package, but aerc
fills it in as part of the default config and then installs that config
to the users home folder. Fix this by not substituting @SHAREDIR@ in the
default config until runtime.
---
 Makefile         | 2 +-
 config/config.go | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index d1c755d..1185a96 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,7 @@ aerc: $(GOSRC)
 		-o $@
 
 aerc.conf: config/aerc.conf.in
-	sed -e 's:@SHAREDIR@:$(SHAREDIR):g' > $@ < config/aerc.conf.in
+	cat config/aerc.conf.in > $@
 
 DOCS := \
 	aerc.1 \
diff --git a/config/config.go b/config/config.go
index 32d07fc..8ffd3e8 100644
--- a/config/config.go
+++ b/config/config.go
@@ -355,6 +355,11 @@ func LoadConfigFromFile(root *string, sharedir string) (*AercConfig, error) {
 			return nil, err
 		}
 	}
+	if sec, err := file.GetSection("templates"); err == nil {
+		if key, err := sec.GetKey("template-dirs"); err == nil {
+			sec.NewKey("template-dirs", strings.ReplaceAll(key.String(), "@SHAREDIR@", sharedir))
+		}
+	}
 	file.NameMapper = mapName
 	config := &AercConfig{
 		Bindings: BindingConfig{
@@ -423,6 +428,9 @@ func LoadConfigFromFile(root *string, sharedir string) (*AercConfig, error) {
 	if err = config.LoadConfig(file); err != nil {
 		return nil, err
 	}
+	for i, filter := range config.Filters {
+		config.Filters[i].Command = strings.ReplaceAll(filter.Command, "@SHAREDIR@", sharedir)
+	}
 	if ui, err := file.GetSection("general"); err == nil {
 		if err := ui.MapTo(&config.General); err != nil {
 			return nil, err
-- 
2.23.0