2 files changed, 21 insertions(+), 0 deletions(-)

M .config/git/config
A bin/nix-edit

@@ 58,6 58,7 @@
 	vertical-split = false
 [tig "bind"]
 	main = R !git revert %(commit)
+	main = _ !git tag -f _ %(commit)
 [tar "tar.xz"]
 	command = xz -c
 [tar "tar.gz"]

@@ 0,0 1,20 @@
+#!/bin/sh -eu
+# Nix provides convenient "nix edit" command that opens file containing
+# definition of specified attribute (package). Unfortunately, it works very
+# slow on "espero" box (probably due a i/o activity and hdd drive), so this
+# script caches result and opens cached path in editor on subsequent calls.
+#
+# Cache invalidation is hard problem, and I don't even attempt to solve it.
+# Luckily, stuff rarely moves around in nixpkgs.
+readonly cachedir=~/.cache/nix-edit
+name=$1
+cache="${cachedir}/${name}"
+
+if ! test -f "${cache}" ; then
+	mkdir -p "${cachedir}"
+	if ! EDITOR=echo nix edit ".#${name}" > "${cache}" ; then
+		rm -f "${cache}"
+		exit 1
+	fi
+fi
+exec $EDITOR "$(cat "${cache}")"