Replaces of symlinks does not appear to work

[xnox]

with the modified wolfi-base as shown in https://github.com/wolfi-dev/os/pull/43832/files , which has two subpackages, that both ship the same symlink, to different destinations and with replaces declared of one another, one can install them with apk tools, but not with apko:

$ make package/wolfi-base
$ make local-wolfi

# apk add package-with-symlink
(1/1) Installing package-with-symlink (1-r8)
OK: 14 MiB in 16 packages
# readlink /etc/some.conf 
../run/target1.conf

# apk add package-with-symlink-replaces
(1/1) Installing package-with-symlink-replaces (1-r8)
OK: 14 MiB in 17 packages
# readlink /etc/some.conf 
../run/target2.conf
# exit



$ make test/wolfi-base
Testing package wolfi-base with version wolfi-base-1-r8 from file wolfi-base.yaml
/home/xnox/go/bin/melange test wolfi-base.yaml --repository-append /home/xnox/wolfi-dev/os/packages --keyring-append local-melange.rsa.pub --arch x86_64 --pipeline-dirs ./pipelines/ --repository-append https://packages.wolfi.dev/os --keyring-append https://packages.wolfi.dev/os/wolfi-signing.rsa.pub --test-package-append wolfi-base --debug  --source-dir ./wolfi-base/
2025/02/26 11:31:22 INFO building test workspace in: '/tmp/melange-guest-815115064-main' with apko
2025/02/26 11:31:22 [DEBUG] GET https://packages.wolfi.dev/os/apk-configuration
2025/02/26 11:31:22 INFO setting apk repositories: [/home/xnox/wolfi-dev/os/packages https://packages.wolfi.dev/os]
2025/02/26 11:31:22 INFO image configuration:
2025/02/26 11:31:22 INFO   contents:
2025/02/26 11:31:22 INFO     build repositories: []
2025/02/26 11:31:22 INFO     runtime repositories: []
2025/02/26 11:31:22 INFO     keyring:      []
2025/02/26 11:31:22 INFO     packages:     [package-with-symlink-replaces wolfi-base]
2025/02/26 11:31:22 INFO installing package-with-symlink (1-r8)
2025/02/26 11:31:22 INFO installing package-with-symlink-replaces (1-r8)
2025/02/26 11:31:22 INFO ERROR: failed to test package. the test environment has been preserved:
2025/02/26 11:31:22 INFO   workspace dir: /tmp/melange-workspace-2334097068
2025/02/26 11:31:22 INFO   guest dir: /tmp/melange-guest-815115064
2025/02/26 11:31:22 ERRO failed to test package: unable to build guest: unable to generate image: installing apk packages: installing packages: installing package-with-symlink-replaces (ver:1-r8 arch:x86_64): unable to install files for pkg package-with-symlink-replaces: unable to install symlink from etc/some.conf -> ../run/target2.conf: symlink ../run/target2.conf /tmp/melange-guest-815115064-main/etc/some.conf: file exists
make: *** [Makefile:115: test/wolfi-base] Error 1

Why is replaces not being honored by apko for symlinks, when apk-tools does?
Note that replaces is honored by apko for regular files.

[xnox]

we should figure out what the replaces semantics should actually be

I guess we should check what happens with:

• directories
• regular files
• device nodes files
• symlinks
• hardlinks
• broken symlinks
• symlinks to directories
• directory to symlink replaces
• symlink to directory replaces
• etc.