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darwin-install: work around existing vim swapfiles

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User on Matrix reported install problems which presented as
"vifs:editing error" which we traced back to vim griping about an
existing swap file. When opened interactively, it did this:

E325: ATTENTION
Found a swap file by the name "/etc/.fstab.swp"
owned by: root dated: Sön Apr 24 16:54:10 2022
file name: /private/etc/fstab
modified: YES
user name: root host name: MBP.local
process ID: 1698
While opening file "/etc/fstab"
dated: Sön Apr 24 16:56:27 2022
NEWER than swap file!
...
This commit is contained in:
Travis A. Everett 2022-06-01 09:41:00 -05:00
parent 078c80f750
commit 505d6ee5e2
1 changed files with 8 additions and 7 deletions
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15
scripts/create-darwin-volume.sh
View file

@ -442,8 +442,9 @@ add_nix_vol_fstab_line() {
local escaped_mountpoint="${NIX_ROOT/ /'\\\'040}"
shift
# wrap `ex` to work around a problem with vim plugins breaking exit codes
# (see github.com/NixOS/nix/issues/5468)
# wrap `ex` to work around problems w/ vim features breaking exit codes
# - plugins (see github.com/NixOS/nix/issues/5468): -u NONE
# - swap file: -n
#
# the first draft used `--noplugin`, but github.com/NixOS/nix/issues/6462
# suggests we need the less-semantic `-u NONE`
@ -456,7 +457,7 @@ add_nix_vol_fstab_line() {
# minver 10.12.6 seems to have released with vim 7.4
cat > "$SCRATCH/ex_cleanroom_wrapper" <<EOF
#!/bin/sh
/usr/bin/ex -u NONE "\$@"
/usr/bin/ex -u NONE -n "\$@"
EOF
chmod 755 "$SCRATCH/ex_cleanroom_wrapper"
@ -650,9 +651,9 @@ EOF
task "Configuring /etc/synthetic.conf to make a mount-point at $NIX_ROOT" >&2
# technically /etc/synthetic.d/nix is supported in Big Sur+
# but handling both takes even more code...
# Note: `-u NONE` disables vim plugins/rc; see note on --clean earlier
# See earlier note; `-u NONE` disables vim plugins/rc, `-n` skips swapfile
_sudo "to add Nix to /etc/synthetic.conf" \
/usr/bin/ex -u NONE /etc/synthetic.conf <<EOF
/usr/bin/ex -u NONE -n /etc/synthetic.conf <<EOF
:a
${NIX_ROOT:1}
.
@ -820,8 +821,8 @@ setup_volume_daemon() {
local volume_uuid="$2"
if ! test_voldaemon; then
task "Configuring LaunchDaemon to mount '$NIX_VOLUME_LABEL'" >&2
# Note: `-u NONE` disables vim plugins/rc; see note on --clean earlier
_sudo "to install the Nix volume mounter" /usr/bin/ex -u NONE "$NIX_VOLUME_MOUNTD_DEST" <<EOF
# See earlier note; `-u NONE` disables vim plugins/rc, `-n` skips swapfile
_sudo "to install the Nix volume mounter" /usr/bin/ex -u NONE -n "$NIX_VOLUME_MOUNTD_DEST" <<EOF
:a
$(generate_mount_daemon "$cmd_type" "$volume_uuid")
.