nixpkgs/pkgs/applications/office/libreoffice/0001-Strip-away-BUILDCONFIG.patch
Maximilian Bosch 408ece7d3d
libreoffice-fresh: strip away BUILDCONFIG, reduce runtime closure size by ~20%
In v7.5.x a change was introduced that writes the BUILDCONFIG into
`$out/lib/libreoffice/program/libsofficeapp.so` including the
`PKG_CONFIG_PATH` containing references to all `dev` outputs of library
dependencies:

    $ strings $(nix-build -A libreoffice-fresh)/lib/libreoffice/program/libsofficeapp.so|grep PKG_CONFIG_PATH
    [...], "BuildConfig": "[...] 'PKG_CONFIG_PATH=[...]'"

This isn't really needed because this information can also be obtained
by `nix derivation show`. Also, this causes a 20% larger runtime-closure
because of all the dev dependencies being referenced by the output and
thus downloaded whenever libreoffice is substituted somewhere. The
actual numbers look like this:

    $ nix path-info -Sh ./result-old
    /nix/store/3mzrqh4gg7v27vdrrap9dj3x8myysmyf-libreoffice-7.5.4.1-wrapped	  2.0G
    $ nix path-info -Sh ./result
    /nix/store/g5y60s0a2q2v6r58xcayv62z7fjfi816-libreoffice-7.5.4.1-wrapped	  1.6G

Only `libreoffice-fresh` is affected, `pkgs.libreoffice` isn't because
it still points to 7.4 whereas the problematic change was introduced in
7.5.

To make sure this doesn't get reintroduced by accident, the derivation
also prohibits now to reference any dev output from a build input.

[1] https://gerrit.libreoffice.org/c/core/+/141197
2023-07-25 18:05:49 +02:00

32 lines
1.3 KiB
Diff

From 982d38084f08950863b55043f36ce5548bd73635 Mon Sep 17 00:00:00 2001
From: Maximilian Bosch <maximilian@mbosch.me>
Date: Mon, 24 Jul 2023 19:12:25 +0200
Subject: [PATCH] Strip away BUILDCONFIG
The `BuildConfig` field in `libsofficeapp.so` includes the entire
`PKG_CONFIG_PATH` and subsequently references to a lot of `dev` outputs
of library dependencies blowing up the closure.
Since this is not strictly needed and the inputs are comprehensible via
`nix derivation show`, this doesn't bring a real benefit in the case of
nixpkgs anyways.
---
desktop/source/lib/init.cxx | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/desktop/source/lib/init.cxx b/desktop/source/lib/init.cxx
index 8d830c0cbd00..fbdc86aa7115 100644
--- a/desktop/source/lib/init.cxx
+++ b/desktop/source/lib/init.cxx
@@ -7097,7 +7097,7 @@ static char* lo_getVersionInfo(SAL_UNUSED_PARAMETER LibreOfficeKit* /*pThis*/)
"\"ProductVersion\": \"%PRODUCTVERSION\", "
"\"ProductExtension\": \"%PRODUCTEXTENSION\", "
"\"BuildId\": \"%BUILDID\", "
- "\"BuildConfig\": \"" BUILDCONFIG "\" "
+ "\"BuildConfig\": \"removed to avoid runtime dependencies against dev outputs of each dependency. Use 'nix derivation show' against the package to find out details about BuildConfig.\" "
"}"));
}
--
2.40.1