Problems with containers started with --detach=True

./target/debug/podlet generate pod --ignore-infra-conmon-pidfile --ignore-pod-id-file pod-freshrss
Error:
   0: error creating Quadlet file(s) from an existing object
   1: error inspecting one of the pod's containers
   2: error parsing Podman container command from `["podman", "container", "run", "--name", "freshrss", "--env", "TZ=Europe/Berlin", "--env", "CRON_MIN=0,15,30,45", "--env", "FRESHRSS_ENV=production", "--env", "LISTEN=0.0.0.0:8065", "--env", "TRUSTED_PROXY=127.0.0.1", "--env", "OIDC_ENABLED=1", "--env", "OIDC_PROVIDER_METADATA_URL=foo", "--env", "OIDC_CLIENT_ID=bar", "--env", "OIDC_CLIENT_SECRET=baz", "--env", "OIDC_X_FORWARDED_HEADERS=X-Forwarded-Port X-Forwarded-Proto X-Forwarded-Host", "--env", "OIDC_SCOPES=openid email profile", "--env", "FRESHRSS_USER=--email a@b.c\n--language de\n--password \"blub\"\n--user dings", "--label", "io.containers.autoupdate=image", "--pod", "pod-freshrss", "--volume", "/var/local/freshrss/data:/var/www/FreshRSS/data", "--volume", "/var/local/freshrss/extensions:/var/www/FreshRSS/extensions", "--detach=True", "docker.io/freshrss/freshrss:1.26.3"]`
   3: error: unexpected value 'True' for '--detach' found; no more were expected

@aylen384

@aylen384 Thank you for your report! Can you please also add your compose.yaml file so we can replicate the issue?

I'm not using compose, but ansible to start the containers and afterwards generate the systemd files via podman generate.

Example .service file:

# /etc/systemd/system/container-synapse.service
# container-synapse.service
# autogenerated by Podman 4.3.1
# Tue Feb  3 17:42:44 CET 2026

[Unit]
Description=Podman container-synapse.service
Documentation=man:podman-generate-systemd(1)
Wants=network-online.target
After=network-online.target
RequiresMountsFor=%t/containers
BindsTo=pod-pod-matrix.service
After=pod-pod-matrix.service

[Service]
Environment=PODMAN_SYSTEMD_UNIT=%n
Restart=on-failure
TimeoutStopSec=70
ExecStartPre=/bin/rm \
        -f %t/%n.ctr-id
ExecStart=/usr/bin/podman container run \
        --cidfile=%t/%n.ctr-id \
        --cgroups=no-conmon \
        --rm \
        --pod-id-file %t/pod-pod-matrix.pod-id \
        --sdnotify=conmon \
        --replace \
        --name synapse \
        --env SYNAPSE_SERVER_NAME=fooobar.de \
        --env SYNAPSE_REPORT_STATS=False \
        --env SYNAPSE_HTTP_PORT=8008 \
        --label io.containers.autoupdate=image \
        --volume /opt/matrix/synapse:/data \
        --detach=True docker.io/matrixdotorg/synapse:v1.146.0
ExecStop=/usr/bin/podman stop \
        --ignore -t 10 \
        --cidfile=%t/%n.ctr-id
ExecStopPost=/usr/bin/podman rm \
        -f \
        --ignore -t 10 \
        --cidfile=%t/%n.ctr-id
Type=notify
NotifyAccess=all

@k9withabone

@k9withabone That code line uses skip_serializing instead of skip_serializing_if - is that a problem when inserting detach=True into the parser instead of detach?

podlet/src/cli/container/podman.rs

Line 132 in ca463af

detach: bool,

That code line uses skip_serializing instead of skip_serializing_if - is that a problem when inserting detach=True into the parser instead of detach?

No, those options are for when the struct is serialized into arguments for the value of the PodmanArgs= Quadlet option. The reason skip_serializing is used here instead of skip_serializing_if is, as stated in the comments, that Quadlet automatically adds --detach to the output in the generated .service file.

The problem here is with parsing --detach=True as opposed to just --detach. It needs to be set up like --tls-verify:

podlet/src/cli/container/podman.rs

Lines 382 to 384 in ca463af

    
               /// Require HTTPS and verify certificates when contacting registries 
        
               #[arg(long, num_args = 0..=1, require_equals = true, default_missing_value = "true")] 
        
               tls_verify: Option<bool>,

Fixes #174

Fix: Problems with containers started with --detach=True

Fixes containers#174

I think this is still failing for podman run commands using '-d' instead of '--detach=True':
error: equal sign is needed when assigning values to '--detach=<DETACH>'

I think this is still failing for podman run commands using '-d' instead of '--detach=True': error: equal sign is needed when assigning values to '--detach=<DETACH>'

This is still an issue btw

Just ran into this today. It just needs a num_args = 0..=1 to make Clap mirror Cobra's boolean flag parsing behaviour.

Should be fixed in #229.

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Problems with containers started with --detach=True #174

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	/// Require HTTPS and verify certificates when contacting registries
	#[arg(long, num_args = 0..=1, require_equals = true, default_missing_value = "true")]
	tls_verify: Option<bool>,

Problems with containers started with --detach=True #174

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TheRealBecks commented on Feb 8, 2026

aylen384 commented on Feb 8, 2026

aylen384 commented on Feb 8, 2026

TheRealBecks commented on Feb 8, 2026

k9withabone commented on Feb 8, 2026

rp86 commented on Jun 11, 2026

dcermak commented on Sep 15, 2026

cyqsimon commented on Sep 21, 2026

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