Slendi/proot-bundler
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Signed-off-by: Slendi <slendi@socopon.com>
This commit is contained in:
Slendi
2025-09-16 14:16:02 +03:00
parent 03460d7e6c
commit 2d0e31b358
1 changed files with 50 additions and 41 deletions
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91
flake.nix
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@@ -57,55 +57,64 @@
pkgs.gzip pkgs.gzip
]; ];
buildCommand = '' buildCommand = ''
set -euo pipefail set -euo pipefail
PAY="$PWD/payload"
mkdir -p "$PAY/nix/store"
# copy closure paths from closureInfo (no nix calls here) PAY="$PWD/payload"
while IFS= read -r p; do mkdir -p "$PAY/nix/store"
cp -a --no-preserve=ownership "$p" "$PAY/nix/store/"
done < ${ci}/store-paths
# pick an app binary # 1) copy closure (no nix calls; uses closureInfo)
APP_BIN=$(find ${appBinGuess} -maxdepth 1 -type f -perm -111 | head -n1) while IFS= read -r p; do
if [ -z "''${APP_BIN:-}" ]; then cp -a --no-preserve=ownership "$p" "$PAY/nix/store/"
echo "no executable found in ${appBinGuess}" >&2 done < ${ci}/store-paths
exit 1
fi
APP_REL="/nix/store/$(basename "$(dirname "$APP_BIN")")/$(basename "$APP_BIN")"
( cd "$PAY" && tar -czf "$PWD/payload.tar.gz" . ) # 2) pick app binary and make relative path used by the runner
APP_BIN=$(find ${appBinGuess} -maxdepth 1 -type f -perm -111 | head -n1)
if [ -z "''${APP_BIN:-}" ]; then
echo "no executable found in ${appBinGuess}" >&2
exit 1
fi
APP_REL="/nix/store/$(basename "$(dirname "$APP_BIN")")/$(basename "$APP_BIN")"
cat > $out <<'SH' # 3) tar the payload OUTSIDE $PAY to avoid self-inclusion
#!/bin/sh _TMP="$(mktemp -d)"
set -euf ( cd "$PAY" && tar \
: "''${TMPDIR:=/tmp}" --sort=name \
EXTRACT_DIR="$(mktemp -d "''${TMPDIR%/}/nxbdl.XXXXXX")" --owner=0 --group=0 --numeric-owner \
cleanup() { [ -n "''${KEEP_BUNDLE:-}" ] || rm -rf "$EXTRACT_DIR"; } -czf "$_TMP/payload.tar.gz" . )
trap cleanup EXIT INT TERM
ARCHIVE_LINE=$(awk '/^__ARCHIVE_BELOW__/ {print NR+1; exit 0}' "$0") # 4) write the self-extracting stub
tail -n +"$ARCHIVE_LINE" "$0" | tar -xzf - -C "$EXTRACT_DIR" cat > "$out" <<'SH'
#!/bin/sh
set -euf
: "''${TMPDIR:=/tmp}"
EXTRACT_DIR="$(mktemp -d "''${TMPDIR%/}/nxbdl.XXXXXX")"
cleanup() { [ -n "''${KEEP_BUNDLE:-}" ] || rm -rf "$EXTRACT_DIR"; }
trap cleanup EXIT INT TERM
cd "$EXTRACT_DIR" ARCHIVE_LINE=$(awk '/^__ARCHIVE_BELOW__/ {print NR+1; exit 0}' "$0")
APP_REL='__APP_REL__' tail -n +"$ARCHIVE_LINE" "$0" | tar -xzf - -C "$EXTRACT_DIR"
PROOT_REL='__PROOT_REL__'
BUNDLE_PWD="''${BUNDLE_PWD:-$PWD}" cd "$EXTRACT_DIR"
exec ".${PROOT_REL}" \ APP_REL='__APP_REL__'
-b ./nix:nix \ PROOT_REL='__PROOT_REL__'
-R / \
-w "$BUNDLE_PWD" \
".$APP_REL" "$@"
__ARCHIVE_BELOW__ BUNDLE_PWD="''${BUNDLE_PWD:-$PWD}"
SH exec ".${PROOT_REL}" \
sed -i \ -b ./nix:nix \
-e "s|__APP_REL__|$APP_REL|g" \ -R / \
-e "s|__PROOT_REL__|${PROOT_REL}|g" \ -w "$BUNDLE_PWD" \
$out ".$APP_REL" "$@"
chmod +x $out
cat payload.tar.gz >> $out __ARCHIVE_BELOW__
SH
# 5) inject paths, chmod, and append payload
sed -i \
-e "s|__APP_REL__|$APP_REL|g" \
-e "s|__PROOT_REL__|${PROOT_REL}|g" \
"$out"
chmod +x "$out"
cat "$_TMP/payload.tar.gz" >> "$out"
''; '';
}; };