flash_writer path is not properly templated when using arduino-cli on Linux

[guberti]

Issue

When uploading Spresense Arduino projects from a machine running Ubuntu 20.04 with arduino-cli, I get the following error:

guberti@microtvm:~/blink$ arduino-cli upload --fqbn SPRESENSE:spresense:spresense --port /dev/ttyUSB0
Error during Upload: uploading error: cannot execute upload tool: fork/exec /home/vagrant/.arduino15/pack
ages/SPRESENSE/tools/spresense-tools/2.2.1/flash_writer/{runtime.os}/flash_writer: no such file or direct
ory

Workaround

This path (tools.spresense-tools.cmd.path.linux) is defined in platform.txt as seen below:

# ------------------------------
tools.spresense-tools.path={runtime.tools.spresense-tools.path}
tools.spresense-tools.cmd.path={path}/flash_writer/{runtime.os}/flash_writer
tools.spresense-tools.cmd.path.windows={path}/flash_writer/{runtime.os}/flash_writer.exe
tools.spresense-tools.cmd.path.linux={path}/flash_writer/{runtime.os}/flash_writer

This issue can be fixed by changing the path to:

tools.spresense-tools.cmd.path.linux={path}/flash_writer/linux/flash_writer

[SPRESENSE]

Hi @guberti
Thank you for reporting issue.
This is a known issue with arduino-cli, and it would be resolved at arduino/arduino-cli#1312.
Let's wait for the next arduino-cli release together.

[guberti]

Thank you, arduino/arduino-cli#1312 seems like the culprit. I'm closing this issue, as the bug is not in this repo.