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Set aspell's data-dir through ASPELL_CONF in a wrapper #24425

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Apr 19, 2017
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Set aspell's data-dir through ASPELL_CONF in a wrapper #24425

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27 changes: 21 additions & 6 deletions pkgs/development/libraries/aspell/default.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -23,12 +23,27 @@ stdenv.mkDerivation rec {
);
'';

# Note: Users should define the `ASPELL_CONF' environment variable to
# `data-dir $HOME/.nix-profile/lib/aspell/' so that they can access
# dictionaries installed in their profile.
#
# We can't use `$out/etc/aspell.conf' for that purpose since Aspell
# doesn't expand environment variables such as `$HOME'.
postInstall = ''
local prog="$out/bin/aspell"
local hidden="$out/bin/.aspell-wrapped"
mv "$prog" "$hidden"
cat > "$prog" <<END
#! $SHELL -e
if [ -z "\$ASPELL_CONF" ]; then
for p in \$NIX_PROFILES; do
if [ -d "\$p/lib/aspell" ]; then
ASPELL_CONF="data-dir \$p/lib/aspell"
fi
done
if [ -z "\$ASPELL_CONF" ] && [ -d "\$HOME/.nix-profile/lib/aspell" ]; then
ASPELL_CONF="data-dir \$HOME/.nix-profile/lib/aspell"
fi
export ASPELL_CONF
fi
exec "$hidden" "\$@"
END
chmod +x "$prog"
'';

meta = {
description = "Spell checker for many languages";
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