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feat(web/static): Expose drvHash attribute on derivation

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This can be used for easy cachebusting of static assets, so that we
can serve them all with a really long cache-time easily.

Change-Id: I7c9f6beddec58e1caf02cda33bc587590217a939
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3660
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
This commit is contained in:
Vincent Ambo 2021-10-01 01:21:13 +03:00 committed by tazjin
parent 5c9c4aa566
commit b1f52b2617
1 changed files with 10 additions and 4 deletions
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14
web/static/default.nix
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@ -1,6 +1,12 @@
{ pkgs, ... }: # Expose all static assets as a folder. The derivation contains a
# `drvHash` attribute which can be used for cache-busting.
{ depot, lib, pkgs, ... }:
# Needs to be a derivation ... let storeDirLength = with builtins; (stringLength storeDir) + 1;
pkgs.runCommand "tvl-static" {} '' in lib.fix(self: pkgs.runCommand "tvl-static" {
passthru = {
drvHash = lib.substring storeDirLength 32 self.drvPath;
};
} ''
cp -r ${./.} $out cp -r ${./.} $out
'' '')