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In 58e4a58 the cp invocation is changed to use -a instead of -p. However, halcyon invokes copy_file using bash's <(cmd) syntax, which passes in a pipe as the file argument; this doesn't work with cp -a. The actual behaviour is that it just removes the destination entirely, for some reason I don't understand, but the expected behaviour would be to replicate the pipe, which is not desireable either.

I'm not entirely sure if this should be considered a bug in bashmenot, or in halcyon, but the change was in bashmenot so I'm filing it here. Note that this is quite serious, as it breaks setting a large number of options from environment variables or command-line options when using halcyon.

On FreeBSD, use pkg.

curl can fail with 000 when cacert is missing or broken on the local machine:

-----> Restoring install directory
       Downloading https://halcyon.global.ssl.fastly.net/osx-10.10-x86_64/ghc-7.8.4/halcyon-install-b1105b3-hello-wai-1.0.tar.gz... 000 (unknown)
       Retrying in 2 seconds (1/5)... 000 (unknown)
       Retrying in 4 seconds (2/5)... 000 (unknown)
       Retrying in 8 seconds (3/5)... 000 (unknown)
       Retrying in 16 seconds (4/5)... 000 (unknown)

This isn’t a transient error, and shouldn’t cause requests to be retried.

Use pacman --sync --downloadonly.

Find a way to provide additional detail in curl messages, including:

• Progress output
• Additional server-provided error messages

For example, when using the s3-eu-central-1.amazonaws.com S3 endpoint, requests fail with 400 (bad request) due to lack of support for AWS Signature Version 4 (mietek/halcyon#49, #9), which is made clear by the additional message provided by Amazon:

The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.

This is related to #5.

• Function to locate the installed libgmp.so.3 or libgmp.so.10 and distinguish between the two
• Function to locate the installed libtinfo.so.5 or libncurses.so.5
• Function to determine whether the host platform is Debian-like and uses apt-get
• Function to determine whether the host platform is RedHat-like and uses yum

Currently, bashmenot supports only AWS Signature Version 2.

AWS Signature Version 4 is needed to support the following S3 regions:

• China (Beijing)
• EU (Frankfurt)

Look into Gow.

It would be nice to use an exact tagged version or a commit SHA-1 when appending to a Git URL. For example, a commit of Bashmenot could be pointed to by the URL https://github.com/mietek/bashmenot#08977d6 (or the full SHA-1).

The code here would seem to support doing so already:

But this line will need a bit of adjustment to allow any commit-like identifier to be used:

Currently, bashmenot only supports installing platform packages on Debian-based and RedHat-based Linux distributions, by wrapping around apt-get and yum, respectively.

The install_platform_packages function needs to be extended to support OS X, and a new OS-specific function needs to be added, most likely by wrapping around brew.