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Add versions to link properties in manifest #1104

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2 changes: 1 addition & 1 deletion crates/cxx-qt-lib-extras/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@ license.workspace = true
description = "Extra Qt types for integrating `cxx-qt` crate with `cxx` that are not available in `cxx-qt-lib`"
repository.workspace = true

links = "cxx-qt-lib-extras"
links = "cxx-qt-lib-extras-0-6-1"

[dependencies]
cxx.workspace = true
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2 changes: 1 addition & 1 deletion crates/cxx-qt-lib-extras/build.rs
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Expand Up @@ -46,7 +46,7 @@ fn main() {
// Disable exporting the standard include directory, as we are exporting custom headers
.export_include_prefixes([])
.export_include_directory(header_dir(), "cxx-qt-lib-extras")
.reexport_dependency("cxx-qt-lib");
.reexport_dependency("cxx-qt-lib-0-6-1");
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@LeonMatthesKDAB LeonMatthesKDAB Oct 21, 2024 •
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Ah, this is a problem!
With Cargos dependency resolver, we may end up with cxx-qt-lib 0.6.2 as the actual dependency here, as it can choose another compatible version.
In which case, reexport_dependency would no longer work!

And we have the same issue with future minor versions, where Cargo may choose a newer version...
So maybe we only include the part of the version in the links key that actually includes a "breaking change".
E.g. cxx-qt-lib-0.6.
However, that will lead to issues if two downstream dependencies enforce exact minor versions that then will have conflicting links keys...

The other route in which we could solve this issue is to use another name in the reexport_dependency.
I guess we could use the name from the manifest instead 🤔

Any opinions @BenFordTytherington @ahayzen-kdab ?

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@ahayzen-kdab ahayzen-kdab Oct 28, 2024

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@LeonMatthesKDAB Hmm so maybe we reexplore this with the build system refactor in 0.8?

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@LeonMatthesKDAB LeonMatthesKDAB Nov 18, 2024

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Yes, we still don't have a firm answer on what takes care of exporting dependencies anyway.
Maybe that will need to be its own build step...


let mut builder = CxxQtBuilder::library(interface)
.qt_module("Gui")
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2 changes: 1 addition & 1 deletion crates/cxx-qt-lib/Cargo.toml
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Expand Up @@ -17,7 +17,7 @@ exclude = [ "**/generate.sh" ]
# to make sure the build scripts are run in the correct order and the build scripts
# can pass metadata from library to dependent.
# See also: https://doc.rust-lang.org/cargo/reference/build-scripts.html#the-links-manifest-key
links = "cxx-qt-lib"
links = "cxx-qt-lib-0-6-1"

[dependencies]
cxx.workspace = true
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2 changes: 1 addition & 1 deletion crates/cxx-qt-lib/build.rs
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Expand Up @@ -314,7 +314,7 @@ fn main() {
.initializer("src/core/init.cpp")
.export_include_prefixes([])
.export_include_directory(header_dir(), "cxx-qt-lib")
.reexport_dependency("cxx-qt");
.reexport_dependency("cxx-qt-0-6-1");

if qt_gui_enabled() {
interface = interface
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2 changes: 1 addition & 1 deletion crates/cxx-qt/Cargo.toml
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Expand Up @@ -21,7 +21,7 @@ categories = ["api-bindings", "gui"]
# to make sure the build scripts are run in the correct order and the build scripts
# can pass metadata from library to dependent.
# See also: https://doc.rust-lang.org/cargo/reference/build-scripts.html#the-links-manifest-key
links = "cxx-qt"
links = "cxx-qt-0-6-1"

[dependencies]
cxx.workspace = true
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