Ubuntu 16.04: E: Package 'libqwt6' has no installation candidate

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I have already tried sudo apt-get update & sudo apt-get upgrade. It didn't work.
I tried to install the package by sudo apt install libqwt, but I get the same error.



Any type of help is highly appreciated.






16.04







share|improve this question





















  • Be careful & accurate with commands as && and & have different meanings (and will likely have different results). The package 'libqwt6' is for Ubuntu 14.04 LTS (amd64, armhf, i38...) and isn't for 16.04 LTS (due changes, its purpose is provided by libqwt6abi1) packages.ubuntu.com/search?keywords=libqwt6
    – guiverc
    Feb 8 at 0:24















up vote
0
down vote

favorite












I have already tried sudo apt-get update & sudo apt-get upgrade. It didn't work.
I tried to install the package by sudo apt install libqwt, but I get the same error.



Any type of help is highly appreciated.






16.04







share|improve this question





















  • Be careful & accurate with commands as && and & have different meanings (and will likely have different results). The package 'libqwt6' is for Ubuntu 14.04 LTS (amd64, armhf, i38...) and isn't for 16.04 LTS (due changes, its purpose is provided by libqwt6abi1) packages.ubuntu.com/search?keywords=libqwt6
    – guiverc
    Feb 8 at 0:24













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I have already tried sudo apt-get update & sudo apt-get upgrade. It didn't work.
I tried to install the package by sudo apt install libqwt, but I get the same error.



Any type of help is highly appreciated.






16.04







share|improve this question













I have already tried sudo apt-get update & sudo apt-get upgrade. It didn't work.
I tried to install the package by sudo apt install libqwt, but I get the same error.



Any type of help is highly appreciated.






16.04




16.04






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Feb 7 at 19:18









user792549

11




11











  • Be careful & accurate with commands as && and & have different meanings (and will likely have different results). The package 'libqwt6' is for Ubuntu 14.04 LTS (amd64, armhf, i38...) and isn't for 16.04 LTS (due changes, its purpose is provided by libqwt6abi1) packages.ubuntu.com/search?keywords=libqwt6
    – guiverc
    Feb 8 at 0:24

















  • Be careful & accurate with commands as && and & have different meanings (and will likely have different results). The package 'libqwt6' is for Ubuntu 14.04 LTS (amd64, armhf, i38...) and isn't for 16.04 LTS (due changes, its purpose is provided by libqwt6abi1) packages.ubuntu.com/search?keywords=libqwt6
    – guiverc
    Feb 8 at 0:24
















Be careful & accurate with commands as && and & have different meanings (and will likely have different results). The package 'libqwt6' is for Ubuntu 14.04 LTS (amd64, armhf, i38...) and isn't for 16.04 LTS (due changes, its purpose is provided by libqwt6abi1) packages.ubuntu.com/search?keywords=libqwt6
– guiverc
Feb 8 at 0:24





Be careful & accurate with commands as && and & have different meanings (and will likely have different results). The package 'libqwt6' is for Ubuntu 14.04 LTS (amd64, armhf, i38...) and isn't for 16.04 LTS (due changes, its purpose is provided by libqwt6abi1) packages.ubuntu.com/search?keywords=libqwt6
– guiverc
Feb 8 at 0:24











1 Answer
1






active

oldest

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up vote
2
down vote













libqwt6 is only available in the repositories through Trusty. Since Trusty, there's been multiple packages produced by qwt's source package:




  • libqwt-dev: Qt widgets library for technical applications (development, qt4)

  • libqwt-dev-dbgsym: debug symbols for package libqwt-dev

  • libqwt-doc: Qt widgets library for technical applications (documentation)

  • libqwt-headers: Qt widgets library for technical applications (header files)

  • libqwt-qt5-6: Qt widgets library for technical applications (runtime, qt5)

  • libqwt-qt5-6-dbgsym: debug symbols for package libqwt-qt5-6

  • libqwt-qt5-dev: Qt widgets library for technical applications (development, qt5)

  • libqwt-qt5-dev-dbgsym: debug symbols for libqwt-qt5-dev

  • libqwt6abi1: Qt widgets library for technical applications (runtime, qt4)

  • libqwt6abi1-dbgsym: debug symbols for libqwt6abi1

  • libqwtmathml-dev: Text Engine for Qwt (development, qt4)

  • libqwtmathml-qt5-6: Text Engine for Qwt (runtime, qt5)

  • libqwtmathml-qt5-6-dbgsym: debug symbols for package libqwtmathml-qt5-6

  • libqwtmathml-qt5-dev: Text Engine for Qwt (development, qt5)

  • libqwtmathml6abi1: Text Engine for Qwt (runtime, qt4)

  • libqwtmathml6abi1-dbgsym: debug symbols for libqwtmathml6abi1



It is likely that one of these packages are what you need, but it looks like there's different Qt version dependencies for each. Identify the one you need, and install that one specifically.






share|improve this answer




















  • I am not able to install any of dbgsym packages, I am getting the "E: Unable to locate package libqwt-dev-dbgsym" error for each of them. I installed all other packages, yet I have the same issue (E: Package 'libqwt6' has no installation candidate).
    – user792549
    Feb 7 at 19:52










  • I have installed the packages, I am still getting the same error. Building dependency tree Reading state information... Done Note, selecting 'libncurses5-dev' instead of 'libncurses-dev' Package libqwt6 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'libqwt6' has no installation candidate
    – user792549
    Feb 7 at 20:42











  • @user792549 It sounds like you need to run sudo apt-get update among other things. Try running sudo apt-get update and then seeing if you can then get package candidates for installation. (I've only ever seen this on a system that hasn't updated recently)
    – Thomas Ward♦
    Feb 8 at 15:08










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1 Answer
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active

oldest

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1 Answer
1






active

oldest

votes









active

oldest

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active

oldest

votes








up vote
2
down vote













libqwt6 is only available in the repositories through Trusty. Since Trusty, there's been multiple packages produced by qwt's source package:




  • libqwt-dev: Qt widgets library for technical applications (development, qt4)

  • libqwt-dev-dbgsym: debug symbols for package libqwt-dev

  • libqwt-doc: Qt widgets library for technical applications (documentation)

  • libqwt-headers: Qt widgets library for technical applications (header files)

  • libqwt-qt5-6: Qt widgets library for technical applications (runtime, qt5)

  • libqwt-qt5-6-dbgsym: debug symbols for package libqwt-qt5-6

  • libqwt-qt5-dev: Qt widgets library for technical applications (development, qt5)

  • libqwt-qt5-dev-dbgsym: debug symbols for libqwt-qt5-dev

  • libqwt6abi1: Qt widgets library for technical applications (runtime, qt4)

  • libqwt6abi1-dbgsym: debug symbols for libqwt6abi1

  • libqwtmathml-dev: Text Engine for Qwt (development, qt4)

  • libqwtmathml-qt5-6: Text Engine for Qwt (runtime, qt5)

  • libqwtmathml-qt5-6-dbgsym: debug symbols for package libqwtmathml-qt5-6

  • libqwtmathml-qt5-dev: Text Engine for Qwt (development, qt5)

  • libqwtmathml6abi1: Text Engine for Qwt (runtime, qt4)

  • libqwtmathml6abi1-dbgsym: debug symbols for libqwtmathml6abi1



It is likely that one of these packages are what you need, but it looks like there's different Qt version dependencies for each. Identify the one you need, and install that one specifically.






share|improve this answer




















  • I am not able to install any of dbgsym packages, I am getting the "E: Unable to locate package libqwt-dev-dbgsym" error for each of them. I installed all other packages, yet I have the same issue (E: Package 'libqwt6' has no installation candidate).
    – user792549
    Feb 7 at 19:52










  • I have installed the packages, I am still getting the same error. Building dependency tree Reading state information... Done Note, selecting 'libncurses5-dev' instead of 'libncurses-dev' Package libqwt6 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'libqwt6' has no installation candidate
    – user792549
    Feb 7 at 20:42











  • @user792549 It sounds like you need to run sudo apt-get update among other things. Try running sudo apt-get update and then seeing if you can then get package candidates for installation. (I've only ever seen this on a system that hasn't updated recently)
    – Thomas Ward♦
    Feb 8 at 15:08














up vote
2
down vote













libqwt6 is only available in the repositories through Trusty. Since Trusty, there's been multiple packages produced by qwt's source package:




  • libqwt-dev: Qt widgets library for technical applications (development, qt4)

  • libqwt-dev-dbgsym: debug symbols for package libqwt-dev

  • libqwt-doc: Qt widgets library for technical applications (documentation)

  • libqwt-headers: Qt widgets library for technical applications (header files)

  • libqwt-qt5-6: Qt widgets library for technical applications (runtime, qt5)

  • libqwt-qt5-6-dbgsym: debug symbols for package libqwt-qt5-6

  • libqwt-qt5-dev: Qt widgets library for technical applications (development, qt5)

  • libqwt-qt5-dev-dbgsym: debug symbols for libqwt-qt5-dev

  • libqwt6abi1: Qt widgets library for technical applications (runtime, qt4)

  • libqwt6abi1-dbgsym: debug symbols for libqwt6abi1

  • libqwtmathml-dev: Text Engine for Qwt (development, qt4)

  • libqwtmathml-qt5-6: Text Engine for Qwt (runtime, qt5)

  • libqwtmathml-qt5-6-dbgsym: debug symbols for package libqwtmathml-qt5-6

  • libqwtmathml-qt5-dev: Text Engine for Qwt (development, qt5)

  • libqwtmathml6abi1: Text Engine for Qwt (runtime, qt4)

  • libqwtmathml6abi1-dbgsym: debug symbols for libqwtmathml6abi1



It is likely that one of these packages are what you need, but it looks like there's different Qt version dependencies for each. Identify the one you need, and install that one specifically.






share|improve this answer




















  • I am not able to install any of dbgsym packages, I am getting the "E: Unable to locate package libqwt-dev-dbgsym" error for each of them. I installed all other packages, yet I have the same issue (E: Package 'libqwt6' has no installation candidate).
    – user792549
    Feb 7 at 19:52










  • I have installed the packages, I am still getting the same error. Building dependency tree Reading state information... Done Note, selecting 'libncurses5-dev' instead of 'libncurses-dev' Package libqwt6 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'libqwt6' has no installation candidate
    – user792549
    Feb 7 at 20:42











  • @user792549 It sounds like you need to run sudo apt-get update among other things. Try running sudo apt-get update and then seeing if you can then get package candidates for installation. (I've only ever seen this on a system that hasn't updated recently)
    – Thomas Ward♦
    Feb 8 at 15:08












up vote
2
down vote










up vote
2
down vote









libqwt6 is only available in the repositories through Trusty. Since Trusty, there's been multiple packages produced by qwt's source package:




  • libqwt-dev: Qt widgets library for technical applications (development, qt4)

  • libqwt-dev-dbgsym: debug symbols for package libqwt-dev

  • libqwt-doc: Qt widgets library for technical applications (documentation)

  • libqwt-headers: Qt widgets library for technical applications (header files)

  • libqwt-qt5-6: Qt widgets library for technical applications (runtime, qt5)

  • libqwt-qt5-6-dbgsym: debug symbols for package libqwt-qt5-6

  • libqwt-qt5-dev: Qt widgets library for technical applications (development, qt5)

  • libqwt-qt5-dev-dbgsym: debug symbols for libqwt-qt5-dev

  • libqwt6abi1: Qt widgets library for technical applications (runtime, qt4)

  • libqwt6abi1-dbgsym: debug symbols for libqwt6abi1

  • libqwtmathml-dev: Text Engine for Qwt (development, qt4)

  • libqwtmathml-qt5-6: Text Engine for Qwt (runtime, qt5)

  • libqwtmathml-qt5-6-dbgsym: debug symbols for package libqwtmathml-qt5-6

  • libqwtmathml-qt5-dev: Text Engine for Qwt (development, qt5)

  • libqwtmathml6abi1: Text Engine for Qwt (runtime, qt4)

  • libqwtmathml6abi1-dbgsym: debug symbols for libqwtmathml6abi1



It is likely that one of these packages are what you need, but it looks like there's different Qt version dependencies for each. Identify the one you need, and install that one specifically.






share|improve this answer












libqwt6 is only available in the repositories through Trusty. Since Trusty, there's been multiple packages produced by qwt's source package:




  • libqwt-dev: Qt widgets library for technical applications (development, qt4)

  • libqwt-dev-dbgsym: debug symbols for package libqwt-dev

  • libqwt-doc: Qt widgets library for technical applications (documentation)

  • libqwt-headers: Qt widgets library for technical applications (header files)

  • libqwt-qt5-6: Qt widgets library for technical applications (runtime, qt5)

  • libqwt-qt5-6-dbgsym: debug symbols for package libqwt-qt5-6

  • libqwt-qt5-dev: Qt widgets library for technical applications (development, qt5)

  • libqwt-qt5-dev-dbgsym: debug symbols for libqwt-qt5-dev

  • libqwt6abi1: Qt widgets library for technical applications (runtime, qt4)

  • libqwt6abi1-dbgsym: debug symbols for libqwt6abi1

  • libqwtmathml-dev: Text Engine for Qwt (development, qt4)

  • libqwtmathml-qt5-6: Text Engine for Qwt (runtime, qt5)

  • libqwtmathml-qt5-6-dbgsym: debug symbols for package libqwtmathml-qt5-6

  • libqwtmathml-qt5-dev: Text Engine for Qwt (development, qt5)

  • libqwtmathml6abi1: Text Engine for Qwt (runtime, qt4)

  • libqwtmathml6abi1-dbgsym: debug symbols for libqwtmathml6abi1



It is likely that one of these packages are what you need, but it looks like there's different Qt version dependencies for each. Identify the one you need, and install that one specifically.







share|improve this answer












share|improve this answer



share|improve this answer










answered Feb 7 at 19:29









Thomas Ward♦

41.8k23115167




41.8k23115167











  • I am not able to install any of dbgsym packages, I am getting the "E: Unable to locate package libqwt-dev-dbgsym" error for each of them. I installed all other packages, yet I have the same issue (E: Package 'libqwt6' has no installation candidate).
    – user792549
    Feb 7 at 19:52










  • I have installed the packages, I am still getting the same error. Building dependency tree Reading state information... Done Note, selecting 'libncurses5-dev' instead of 'libncurses-dev' Package libqwt6 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'libqwt6' has no installation candidate
    – user792549
    Feb 7 at 20:42











  • @user792549 It sounds like you need to run sudo apt-get update among other things. Try running sudo apt-get update and then seeing if you can then get package candidates for installation. (I've only ever seen this on a system that hasn't updated recently)
    – Thomas Ward♦
    Feb 8 at 15:08
















  • I am not able to install any of dbgsym packages, I am getting the "E: Unable to locate package libqwt-dev-dbgsym" error for each of them. I installed all other packages, yet I have the same issue (E: Package 'libqwt6' has no installation candidate).
    – user792549
    Feb 7 at 19:52










  • I have installed the packages, I am still getting the same error. Building dependency tree Reading state information... Done Note, selecting 'libncurses5-dev' instead of 'libncurses-dev' Package libqwt6 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'libqwt6' has no installation candidate
    – user792549
    Feb 7 at 20:42











  • @user792549 It sounds like you need to run sudo apt-get update among other things. Try running sudo apt-get update and then seeing if you can then get package candidates for installation. (I've only ever seen this on a system that hasn't updated recently)
    – Thomas Ward♦
    Feb 8 at 15:08















I am not able to install any of dbgsym packages, I am getting the "E: Unable to locate package libqwt-dev-dbgsym" error for each of them. I installed all other packages, yet I have the same issue (E: Package 'libqwt6' has no installation candidate).
– user792549
Feb 7 at 19:52




I am not able to install any of dbgsym packages, I am getting the "E: Unable to locate package libqwt-dev-dbgsym" error for each of them. I installed all other packages, yet I have the same issue (E: Package 'libqwt6' has no installation candidate).
– user792549
Feb 7 at 19:52












I have installed the packages, I am still getting the same error. Building dependency tree Reading state information... Done Note, selecting 'libncurses5-dev' instead of 'libncurses-dev' Package libqwt6 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'libqwt6' has no installation candidate
– user792549
Feb 7 at 20:42





I have installed the packages, I am still getting the same error. Building dependency tree Reading state information... Done Note, selecting 'libncurses5-dev' instead of 'libncurses-dev' Package libqwt6 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'libqwt6' has no installation candidate
– user792549
Feb 7 at 20:42













@user792549 It sounds like you need to run sudo apt-get update among other things. Try running sudo apt-get update and then seeing if you can then get package candidates for installation. (I've only ever seen this on a system that hasn't updated recently)
– Thomas Ward♦
Feb 8 at 15:08




@user792549 It sounds like you need to run sudo apt-get update among other things. Try running sudo apt-get update and then seeing if you can then get package candidates for installation. (I've only ever seen this on a system that hasn't updated recently)
– Thomas Ward♦
Feb 8 at 15:08

















 

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