I have a Solaris package with depend file. When I install the package, it ignores the dependencies.
My depend file looks like this:
P SUNWcsu Core Solaris, (Usr)
P XXCore My core package
I am able to install the package even if XXCore is not installed.
My Prototype looks like this:
i pkginfo
i depend
i request
Thanks in advance.
BTW, other install files (request, checkinstall, etc) are handled correctly.
UPDATE:
I have made some changes to the depend file so it looks like one that works fine. I only changed Tab to white space. Now it behaves differently - I get the following:
Verifying package dependencies.
WARNING:
The XXCore package "My core package" is a
prerequisite package and should be installed.
Do you want to continue with the installation?
It is better, but I want the installation to stop, without the option to continue
Should you want to enforce a prerequisite, you can prevent the package installation by using a checkinstall or preinstall script that check for required the package presence and exit in error if not.
Related
I am using MikTex 2.9 and Texmaker. I need to download packages, such as the sespace package, manually from https://ctan.org/. I have done that and placed the resulting folder in: C:\Users\User1\AppData\Local\Programs\MiKTeX 2.9\tex\latex
Other previously installed packages are in that location and are recognised by MikTex as present.
The setspace folder contains setspace.sty and two test files. However when I compile in Texmaker it doesn't recognise that the package is present, and wants to download it.
Does the .sty file need to go somewhere specific, and how do I find out where that might be, please?
I can install a Racket package with:
raco pkg install <pkg-name>
If the package is not installed, it installs it. If the package is already installed however, it will complain that the package is already installed. While this is fine, is there a better way to check if a package is installed, and only try to install it if its not already installed?
For context, I want this because I have a (non-package) Racket project that relies on certain packages being installed. I could put them in an info.rkt file, but as far as I can tell, these won't get installed unless I try to install the project as a package, which doesn't make sense for this domain.
So, is there anyway to determine if a Racket package is installed? Additionally, can I use this information to only install a package if its not already installed?
Yes, in fact you can. If you are using a shell program or makefile (basically, using the raco pkg tool from the command line), you can pass it the --skip-installed parameter. This will only try to install the package if its not already installed. So you could do something like this in a mace file:
all: # Replace spaces here with tabs, because make...
raco pkg install --skip-installed <important-pkg>
<rest-of-makefile>
Alternatively, if you are looking for an 'in Racket' solution, you can use the installed-pkg-table function to get a hash table containing all of the installed packages. From there, its easy enough to do a hash-has-key? to see if the package is in the table. From there, you can use pkg-install-command to install the package. Your total code will look something like this:
(unless (hash-has-key? (installed-pkg-table) "<important-pkg>")
(pkg-install-command #:deps 'search-auto i))
I should note that there is a slight chance that the package database will change between searching for the key and installing the package. If that is important to you, check out with-pkg-lock
I am using chef resource package to install, it always get installed to the default location. Say for example, the code below will install in /etc/httpd
package "httpd" do
action :install
end
If I want to have it installed to a custom location, what is the way to achieve it?
Regards,
Pradip
There is an options property you can use to pass command line arguments to whatever the underlying package install command, but few OSes support relocation for distro packages so this is likely to go very poorly. Assuming you are using yum, it would be
package "httpd" do
options "--installroot=/path"
end
I've installed Ocamlodbc using opam install odbc, but I can't work out how to build an app that uses it with ocamlbuild. The examples that come with the source don't build either.
If I put
#require "odbc";;
into my .ocamlinit, I can open Odbc_unixodbc;; in utop, but any reference to functions in that module result in a "Reference to undefined global 'Odbc_unixodbc'" error.
The following snippet also fails with an error about no implementation for "Odbc_unixodbc"
open Odbc_unixodbc
let () = ignore (Odbc_unixodbc.connect "DSN" "UID" "PWD")
Trying
open Odbc
fails with "Unbound module Odbc"
I'm building the code with
ocamlbuild -pkg odbc test.native
The generated documentation for the package seem to suggest I should be opening the "Ocamlodbc" module, but that also results in an "Unbound module" error.
TL;DR
ocamlbuild -use-ocamlfind -pkg odbc test.native
Description
-use-ocamlfind tells ocamlbuild to use ocamlfind system to find libraries on your system. Otherwise, without this flag, you need to provide flags with concrete locations and also take care of the package dependencies. So, it is a good idea to always use ocamlfind.
If this command still doesn't work for you, then make sure, that you chose the right package name. You can use ocamlfind list to look at the set of all packages available on your system.
Further reading
While the above is ok for small programs, I would suggest to use OASIS system to handle all the flags for you.
You can start from this example, adapting dependency list to your neeeds.
I know there's a lot of information on here about installing python packages, but I'm quite new to python and I think I need a more "for dummies" level of help.
I was trying to install openpyxl for which as far as I can tell I need easy_install, for which, as far as I can tell, I need setuptools. I tried running the code provided here https://pypi.python.org/pypi/setuptools which is supposed to download and install setuptools (and according to some sites, easy_install aswell?) - it runs successfully, but help(modules) doesn't show setuptools or easy_install as modules, I have no idea whats installed and what isn't, or how I'm supposed to install any of it!
Essentially I'm very confused, very frustrated and really need someone to talk me through (in idiot-speak) what I'm supposed to do.
Thankyou!
We all start somewhere, I was there two weeks ago.
I'll assume you're using Python2. I believe Distribute and Pip are recommended for Python3 (which I will be using as examples). I will also assume you are on Windows.
First, python needs to be registered to Path. To check if this has been done automatically, open a command prompt (start -> programs -> accessories), and type 'python', then enter. If it returns the version number, etc, skip down a bit. If it throws an error, you need to add Python to Path.
Adding Python to Path
To add Python to Path on a Windows computer, go to:
Control Panel -> System -> Advanced Settings -> Environment Settings -> System Variables
Scroll down to select path, then click edit. Copy the entire line to a text document, and add your install directory for Python.exe (and the scripts folder) using ';' as a delimiter between different directories. Copy this back to Path and save. (Additionally close your command prompt window to reset it.)
For my Windows 7 machine, I added:
;C:\Python33;C:\Python33\scripts;
Take care when editing this file. There are many videos out there describing this in detail if you feel unsure about changing this.
Installing Modules (Such as setup_tools)
Once Python is registered in the Path file, download and unzip setup_tools to a folder within your Python install directory called 'modules'. I use ExtractNow to unzip, as it will unzip twice (as required) automatically.
Open a command prompt window again, and direct it to change directories by typing
cd [directory for module you want to install]
On my computer, this would be
cd C:\Python33\modules\distribute-0.6.40
Again, I use distribute, rather than setup_tools as it sounds like you need would for Python2. Simply use the appropriate directory. Press enter to change the directory.
Once you've entered this and it shows a changed directory, type:
python setup.py install
This indicates that you want to use the program python to use the setup.py file in the specified folder to install the module. This should be successful, and will write many lines of code.
If you want to install other modules, you would install them in a similar way. Python would automatically use setup_tools on your computer to finish each install.
Remember to import at the start of your script when using them to code:
import [module]
Happy Programming!