InstallUV installs UV into a dedicated layer, respecting version constraints.

InternalErrorf covers internal Google-attributed errors.

InvalidAppHostingYamlError creates a FahError with metadata about an invalid apphosting.yaml file that caused the build to fail.

IsAngularApplication returns true if angular.json exists or @angular/core is present in package.json.

IsDevSyncUseRunitUniversalMaker indicates that Runit supervision and universal_maker for DevSync are enabled.

IsRuby25 returns true if the build environment has Ruby 2.5.x installed.

IsRuby4 returns true if the build environment has Ruby 4.x.y installed.

IsSkipFrameworkInjectionEnabled returns true if skipping Functions Framework injection is enabled.

IsStaticBaseImage returns true if the workload is being built on a static base image (e.g., static24). In generic run images, GOOGLE_RUNTIME is set to

IsSystemError determines if the error type is a SYSTEM-attributed error

IsUVInstalledInPath checks if the uv executable is installed in the PATH.

IsUsingNativeImage returns true if the Java application should be built as a native image.

IsWritable returns true if the file at the path constructed by joining elem is writable by the owner.

Main is the main entrypoint to a buildpack's detect and build functions.

MainManifestEntry returns the Main-Class manifest entry of the jar at the given filepath, or an empty string if the entry does not exist.

MajorVersion returns the major version of a version string of format "major.minor.patch".

MarshalJSON marshals the enum as a quoted json string.

MisconfiguredSecretError creates a FahError belonging to a class of errors that occur when a secret is either not found or permissions are not properl

New constructs a BuilderOutput and returns a pointer.

OptInEnvSet is used to opt into the build process based on env var presence.

OptInFileFound is used to opt into the build process based on file presence.

OptOutEnvNotSet is used to opt out of the build process based on env var absence.

OptOutFileNotFound is used to opt out of the build process based on file absence.

OverrideAngularBuildScript overrides the build script to be the Angular build script.

OverrideNextjsBuildScript overrides the build script to be the Nextjs build script

PIPInstallRequirements installs dependencies from the given requirements files in a virtual env. It will install the files in order in which they are

ParseFirebaseConfig reads and parses a firebase.json file. If the file does not exist, it returns an empty slice and no error.

PatchSysconfig patches the python sysconfig variable prefix.

PerformBuild consolidates the build logic for Go applications.

PipInstallPyproject installs dependencies from a pyproject.toml file in the current directory.

PoetryInstallDependenciesAndConfigureEnv installs dependencies and sets up the runtime environment.

PyprojectPackagePresent checks if a given package is present in pyproject.toml.

Read reads in the custom env file to a map. This is a very dumb function that just splits each line with the format KEY=VALUE and adds it to the outpu

ReadProjectFile returns a .NET Project object.

ShouldTestStack returns true if the current test should be included on test runs using the given buildpack stack.

SupportsAppEngineApis is a Go buildpack specific function that returns true if App Engine API access is enabled

SupportsAppEngineApis is a function that returns true if App Engine API access is enabled

SupportsGoCleanModCache returns true if the Go version supports `go clean -modcache` without loading the packages. The command fails if the packages a

SupportsGoGet returns true if the Go version supports `go get`. For versions above 1.22.0+ `go get` is not supported outside of modules in legacy gopa

SupportsGoProxyFallback returns true if the Go version supports fallback in GOPROXY using the pipe character. This feature is supported by Go 1.15 and

SupportsVendorModificaton returns true if the Go version supports modifying vendor directory without modifying vendor/modules.txt. Versions 1.23.0 and

SymlinkBin finds any gem-installed binary directory under gemsDir and creates a relative symlink at binDir pointing to it.

TarballDownloadURL returns URL to download tarball from lorry.

UVInstallDependenciesAndConfigureEnv installs dependencies and sets up the runtime environment using uv.

UVInstallRequirements installs dependencies from requirements.txt using 'uv pip install' and returns the path to the venv.

UnmarshalJSON unmashals a quoted json string to the enum value

UnmarshalMockProcessMap is a utility function that marshals a map[string]MockProcess from JSON.

UserErrorf covers all other user-attributed errors that don't fit into the other known error types.

UsingStaticServe returns true if the static serve buildpack is active.

Value retrieves the value of a FloatDP. Not threadsafe.

WithBuildContext sets the buildContext in Context.

WithCapabilities sets the capabilities for the buildpack test.

WithCapability allows the entrypoint (Maker or Runner) to inject a strategy/capability. This is used to override default behaviors with specialized im

WithStackID sets the StackID in Context.

Access secret version. Includes secret's sensitive data.

addJvmConfig is a workaround for https://github.com/google/guice/issues/1133, an "illegal reflective access" warning. When that bug has been fixed in