Bug#985975: systemd: Setting swap using swap.target impossible

[Chris Jackson]

Package: systemd
Version: 247.3-3
Severity: important

Dear Maintainer,

Setting swap using swap.target.wants dropins appears to be impossible
due to conflicting requirements.

Attempting to create a .swap file in
/etc/systemd/system/swap.target.wants/ yields the following warning when
attempting `systemctl restart swap.target`

swap.target: Wants dependency dropin
/etc/systemd/system/swap.target.wants/swapfile.swap is not a symlink,
ignoring.

Creating a symlink to a .swap file located in /usr/local/lib/systemd
yields the following:

/etc/systemd/system/swap.target.wants/./swapfile.swap: symlinks are not
allowed for units of this type, rejecting.

Can't use a symlink, can't use a non-symlink eiter.

-- Package-specific info:

-- System Information:
Debian Release: 10.8
  APT prefers stable
  APT policy: (990, 'stable'), (600, 'testing'), (500, 'testing-security'), (500, 'stable-updates')
Architecture: armhf (armv7l)

Kernel: Linux 5.10.0-0.bpo.4-armmp (SMP w/4 CPU threads)
Kernel taint flags: TAINT_CRAP, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages systemd depends on:
ii  adduser               3.118
ii  chrony [time-daemon]  4.0-6
ii  libacl1               2.2.53-4
ii  libapparmor1          2.13.2-10
ii  libaudit1             1:2.8.4-3
ii  libblkid1             2.33.1-0.1
ii  libc6                 2.31-9
ii  libcap2               1:2.25-2
ii  libcrypt1             1:4.4.17-1
ii  libcryptsetup12       2:2.3.4-2
ii  libgcrypt20           1.8.4-5
ii  libgnutls30           3.7.0-7
ii  libgpg-error0         1.35-1
ii  libip4tc2             1.8.5-3~bpo10+1
ii  libkmod2              26-1
ii  liblz4-1              1.8.3-1
ii  liblzma5              5.2.4-1
ii  libmount1             2.36.1-7
ii  libpam0g              1.3.1-5
ii  libseccomp2           2.5.1-1
ii  libselinux1           3.1-3
ii  libsystemd0           247.3-3
ii  libzstd1              1.4.8+dfsg-2.1
ii  mount                 2.33.1-0.1
ii  util-linux            2.33.1-0.1

Versions of packages systemd recommends:
ii  dbus  1.12.20-0+deb10u1

Versions of packages systemd suggests:
ii  policykit-1        0.105-25
pn  systemd-container  <none>

Versions of packages systemd is related to:
pn  dracut           <none>
ii  initramfs-tools  0.133+deb10u1
ii  libnss-systemd   247.3-3
ii  libpam-systemd   247.3-3
ii  udev             247.3-1~bpo10+1

-- no debconf information