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|
#! /bin/sh
# usage: texnix TEXFILE...
# Print Nix expression for creating a TeX working environment for a set of
# TEXFILEs.
set -efu
texnix_version=1.0.0
TMPDIR=$(mktemp --tmpdir -d texnix.XXXXXXXX)
trap 'rm -R "$TMPDIR"' EXIT
# Export TMPDIR for subsequent calls to mktemp.
export TMPDIR
# usage: extract_dependencies TEXFILE...
# Print all (transitive) dependencies of TEXFILEs.
extract_dependencies() {(
all_packages=$TMPDIR/all_packages
dependencies=$TMPDIR/dependencies
working_set=$TMPDIR/working_set
get_all_packages > "$all_packages"
truncate -s 0 "$dependencies"
get_packages "$@" | comm -12 - "$all_packages" > "$working_set"
while test -s "$working_set"; do
package=$(pop "$working_set")
echo "$package" | add "$dependencies"
tmp_working_set=$(mktemp working_set.XXXXXXXX)
{ cat "$working_set"
texlive_cat "$package" | get_packages - | comm -2 - "$dependencies"
} | sort -u | comm -12 - "$all_packages" > "$tmp_working_set"
mv "$tmp_working_set" "$working_set"
done
cat "$dependencies"
)}
# usage: texlive_cat PACKAGE
# Concatenate and print all files of a TeX live package.
texlive_cat() {
nix-build --no-out-link '<nixpkgs>' -A texlive."$1".pkgs |
while read -r path; do
find "$path" -mindepth 1 -maxdepth 1 -name tex -exec find {} -type f \;
done |
xargs cat
}
# usage: get_all_packages
# Print all TeX live packages.
get_all_packages() {
nix-instantiate \
--eval \
--json \
--strict \
-E \
'builtins.attrNames (import <nixpkgs> {}).texlive' \
|
jq -r .[] |
sort -u
}
# usage: get_packages TEXFILE...
# Print all packages used in TEXFILEs.
get_packages() {
sed -rn '
s:.*(usepackage|RequirePackage).*\{([^}]+)}:\2:;T
s:,:\n:g
p
' "$@" |
sort -u
}
# usage: add SETFILE
# Add lines read from stdin to SETFILE.
add() {(
t=$(mktemp add.XXXXXXXX)
sort -u - "$1" > "$t"
mv "$t" "$1"
)}
# usage: pop FILE
# Remove first line of FILE and print it to stdout.
pop() {
head -1 "$1"
sed -i 1d "$1"
}
cat <<EOF
# Generated with texnix $texnix_version
{ texlive, extraTexPackages ? {} }:
texlive.combine ({
inherit (texlive) scheme-small;
$(extract_dependencies "$@" | sed '
s/.*/"&" = texlive."&";/
2,$s/^/ /
')
} // extraTexPackages)
EOF
|
