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# dh-cargo fork
This is a fork of the debhelper script [dh-cargo],
based on git commit e07347b
(included with version 30 released 2022-11-25),
with these functional changes:
* support workspace (i.e. multi-crate project),
* resolve crate name and version from Cargo.toml,
using X-Cargo-Crates hint or library package name only as key
* support debhelper option --sourcedirectory
* support debhelper option --no-package
* validate package names against Cargo.toml entries,
failing early (not after test) on crate vs. package mismatch
* generate cargo-checksum during install
* pass cargo --remap-path-prefix option sets in RUSTFLAGS
* allow overriding CARGO_HOME
* use regex (not strings) for matching files to omit from install
* omit installing crate metadata in binary library packages:
* omit any .git* files or directories
* omit license files
* omit debian/patches
(see bug#880689)
* use debian/Cargo.lock or Cargo.lock (in that order),
if Cargo.lock exists
* use crates below debian/vendorlibs when available
* use dh_auto_build
(not confusingly only dh_auto_test)
Also included is a slight fork of related [cargo] wrapper script,
based on git commit e4072cb
(included with version 0.63.1-1 released 2022-11-16),
with these functional changes:
* support --remap-path-prefix option sets in RUSTFLAGS
by omitting that (not fail) when DEB_CARGO_CRATE is not set
* support documented shorter CARGO_HOME path
* support cargo option --path
* fix only inject path for "cargo install" when not passed as option
* support DEB_BUILD_OPTIONS=terse
* enable optimization flags by default also for tests,
and support DEB_BUILD_OPTIONS=noopt
[dh-cargo]: <https://salsa.debian.org/rust-team/dh-cargo/-/blob/master/cargo.pm>
[cargo]: <https://salsa.debian.org/rust-team/cargo/-/blob/debian/sid/debian/bin/cargo>
## Usage
In your source package,
copy directory `dh-cargo` to `debian/dh-cargo`
and edit `debian/rules` to something like this:
```
#!/usr/bin/make -f
# use local fork of dh-cargo and cargo wrapper
PATH := $(CURDIR)/debian/dh-cargo/bin:$(PATH)
PERL5LIB = $(CURDIR)/debian/dh-cargo/lib
export PATH PERL5LIB
%:
dh $@ --buildsystem cargo
```
-- Jonas Smedegaard <dr@jones.dk> Wed, 25 Jan 2023 16:45:34 +0100
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