feat(26.04): introduce v3 format

[cjdcordeiro]

Related to canonical/chisel#249

Needs #904

IMPORTANT

For the reviewer: please note that the huge changeset is brought in by the commit 84f4eb3, which is about converting all essentials to maps, according to the v1.4.0+v3 expectations

[cjdcordeiro]

@upils @letFunny

[lczyk]

i know this is still in draft mode, but i thought i'd have a look anyway

[lczyk]

syntax errors in: EDIT: fixed while i was posting the review, but the bit below is still valid

- slices/libpython3.13-stdlib.yaml
- slices/libsnappy1v5.yaml
- slices/libsubid5.yaml
- slices/libtiff6.yaml
- slices/libvdpau1.yaml
- slices/mesa-libgallium.yaml
- slices/perl-base.yaml
- slices/rabbitmq-server.yaml
- slices/tar.yaml
- slices/util-linux.yaml

also, i'd fix those too, just so people are not confused when they find them in the comments:

$ find slices -type f -name '*.yaml' | xargs grep -nEH '\s{6}#\s-\s[^\s-]'
slices/rabbitmq-server.yaml:26:      # - erlang-base_bins
slices/rabbitmq-server.yaml:27:      # - erlang-inets_scripts
slices/rabbitmq-server.yaml:28:      # - erlang-inets_modules
slices/rabbitmq-server.yaml:29:      # - erlang-os-mon_bins
slices/nginx.yaml:11:      # - iproute2_bins
slices/libsubid5.yaml:14:      # - libcrypt1_libs
slices/libsubid5.yaml:15:      # - libpam0g_libs
slices/libsubid5.yaml:17:      # - libsemanage2_libs
slices/gcc.yaml:14:      # - gcc (priority 20)
slices/gcc.yaml:15:      # - clang (priority 10)
slices/gcc.yaml:16:      # - tcc (priority 10)
slices/gcc.yaml:17:      # - pcc (priority -100)
slices/openssl-provider-legacy.yaml:10:      # - libssl3t64_libs # prevent circular dependency with libssl3t64
slices/libboost-coroutine1.83.0.yaml:11:      # - libgcc-s1_libs
slices/ca-certificates-java.yaml:13:      # - openjdk-8-jre-headless_security

[cjdcordeiro]

syntax errors in: EDIT: fixed while i was posting the review, but the bit below is still valid

- slices/libpython3.13-stdlib.yaml
- slices/libsnappy1v5.yaml
- slices/libsubid5.yaml
- slices/libtiff6.yaml
- slices/libvdpau1.yaml
- slices/mesa-libgallium.yaml
- slices/perl-base.yaml
- slices/rabbitmq-server.yaml
- slices/tar.yaml
- slices/util-linux.yaml

also, i'd fix those too, just so people are not confused when they find them in the comments:

$ find slices -type f -name '*.yaml' | xargs grep -nEH '\s{6}#\s-\s[^\s-]'
slices/rabbitmq-server.yaml:26:      # - erlang-base_bins
slices/rabbitmq-server.yaml:27:      # - erlang-inets_scripts
slices/rabbitmq-server.yaml:28:      # - erlang-inets_modules
slices/rabbitmq-server.yaml:29:      # - erlang-os-mon_bins
slices/nginx.yaml:11:      # - iproute2_bins
slices/libsubid5.yaml:14:      # - libcrypt1_libs
slices/libsubid5.yaml:15:      # - libpam0g_libs
slices/libsubid5.yaml:17:      # - libsemanage2_libs
slices/gcc.yaml:14:      # - gcc (priority 20)
slices/gcc.yaml:15:      # - clang (priority 10)
slices/gcc.yaml:16:      # - tcc (priority 10)
slices/gcc.yaml:17:      # - pcc (priority -100)
slices/openssl-provider-legacy.yaml:10:      # - libssl3t64_libs # prevent circular dependency with libssl3t64
slices/libboost-coroutine1.83.0.yaml:11:      # - libgcc-s1_libs
slices/ca-certificates-java.yaml:13:      # - openjdk-8-jre-headless_security

see 30a3da8

[lczyk]

approving subject to CI passing and https://github.com/canonical/chisel-releases/pull/903/files#r2832716434 ( i've missed one case in my sed suggestion )

[lczyk]

in fear of showing how bad my jq/yq jiujitsu is:

$ find slices -type f -name '*.yaml' | \
xargs -I{} -n1 bash -c \
'yq -r \'.slices | .[] | select(.essential != null) | .essential | tag\' {} | grep -q \'!!seq\' && echo {}'
slices/libnginx-mod-stream-geoip.yaml
slices/libnginx-mod-http-geoip.yaml
slices/libglib2.0-0t64.yaml
slices/libnss3.yaml
slices/libnginx-mod-stream-geoip2.yaml
slices/tzdata-legacy.yaml
slices/libnginx-mod-stream.yaml
slices/libnginx-mod-http-headers-more-filter.yaml
slices/libnginx-mod-http-geoip2.yaml

☝️ all the files with non-map essentials

[lczyk]

sigh... 😑 i forgot that merging #907 would mess up this PR. my merge so my fix: 7a13277, 70ab5b5

[lczyk]

• blocked by chore(26.04): remove libnet1 #925

[zhijie-yang]

Here are some non-v3-essentials remaining in the ready-to-drop-in comments that we need to also deal with.

[cjdcordeiro]

the hint validation is failing due to the lack of checkout of the forked head. i'm working on a fix